Showing posts with label speed. Show all posts
Showing posts with label speed. Show all posts

Monday, December 10, 2012

Almost the Perfect 10!

Post-marathon running has been all about chilling out and letting my legs do what they enjoy. That means (relatively) low mileage and high intensity. My biggest week thus far has been 54km, the longest run mo more than 15km and my average run is in the region of 8-9km. Looking at my dailymile profile another major change is the average pace of my runs which has has dropped from ~5:00/km at the peak of my marathon training phase to under 4:30/km. It's still hard work but honestly I love it! This is just so different from the (relatively) slow high volume training I did for over three months. I'm rarely out for more than 40 minutes, I work up a sweat and I feel energised after each workout.

Last week was a revelatory week for me, that wonderful feeling when you work through something in training, and struggle a bit but come race day, the moment to deliver, everything clicks.

One kilometre at a time

This past Tuesday so the return of my favourite track workout, 1km repeats. I don't know what it is about the session but 5 x 2.5 laps of a standard 400m track is the sort of workout that challenges my resolve yet remains completely and always attainable. It takes me a while to get inot 400m reps while mile reps are just too long, 800m comes close, but 1km hits the sweet spot. Right now I'm not too fazed by what pace I do them in. I'm concentrating on even effort and good form. I find it hard to work off a pace target right now because I haven't reached any kind of peak or plateau phase. I also respond well to speed training so find that week on week, my comfort level can shift dramatically.

1km Interval Time  Recovery (600m)
1 03:30.8 02:46.1
2 03:23.4 02:38.3
3 03:22.4 02:50.3
4 03:22.7 03:01.6
5 03:23.7 -
Average 03:24.6 02:49.1


The first interval was just me getting into the swing of things but I felt good so decided to push a bit harder on the next four. I was really happy with my consistency, and that was I able to hit 81/82s laps without straining too much. The fourth and fifth intervals were tough but I maintain the pace. This session really hit home how much I have improved this year. Early in May I did a session of 1km repeats, where I couldn't even do the 5th and I was hitting around 3:53-3:56. Seven months later I have managed to average 3:25 for the same session off shorter rest, less than 3 minutes compared to 5 minutes then

Special Blocks

I have this morbid fascination with elite athletes and their training, where even though I know I will never train like them I don't think it hurts to apply some of their principles to my own training. The best in the business are Kenyans, so I have been looking to them for some inspiration. Something I came across was doing special blocks to simulate the demands of a race without sabotaging your training by doing the whole event. The principle is more applicable to marathon training but I tried it with my 10km training. 

Thursday is my double up day, I usually do a hard session in the morning and a recovery run in the afternoon. Last week I instead did my tempo as usual in the morning and ran my 5.2km run as a hard effort. In the morning I did 5km of hard running at target race pace and added to the afternoon effort made up ~10km at race pace.

The morning session was tougher than I expected, a combination of the warm weather, the monotony of lap running and the fact that I did it on grass. My 5km effort was in 18:46, 3:45/km, bang on target! The afternoon session was better, out on the road, and I hit 5km in 18:33 before easing back to the end. So my combined 10k m effort was 37:19.

The trick of course is to put those sessions together come 29 December.

Race Day: Great Challenge Series 10km

I'm working off a 3 week cycle, repeated twice, with the goal at the end of the six weeks to hit around 37:30 for 10km. So I did the Kolonnade 10km 3 weeks ago to see where I was post-marathon, and the Great Challenge 10km fell neatly into my three week cycle. I had heard the course was fast but tough, like Tom Jenkins a flat course with one steep climb thrown into the mix.

To be honest while I was hoping to break my 38:22 PB from Kolonnade, I wasn't expecting to run much faster, my goal was to be between 3:48 to 3:50 pace, good for 38:00 to 38:20. And of course that tough but fast description really had me scratching my head, but as you can see from the course profile it is actually completely accurate:

That's what a tough but fast course looks like!
Unlike the past two races where I ended up bogged in the pack. I positioned myself in the second row at the start and got off to a good start. The pace at the beginning was hot! I found myself around some speedy looking runners but I was feeling comfortable. Another than the short climb at the beginning it was plain sailing but I was worried about the pace and tried to settle down. I was through 2km in 7:00, and 3km in 10:35 and then calmed down a bit to go through 4km in 14:23! 

Then we climbed. And we climbed. And we climbed. It was a solid kilometre and suddenly I was through 5km in 19:04 after a 4:41 split. There was still a bit more mild climbing to the turnaround point, before the descent. You generally think you can make up time but even though I cruised back down the hill, my little legs can only turn so fast, and my return split for the 7th km was a 3:28 according to the Garmin, not much time gained back! 

I didn't pay too much attention to my splits as I hurtled back down the monster hill, but I hit 8km in 29:54, which would have been a PB for the distance, and as my thighs started to burn I just focused as I did during the speed sessions before in just maintaining good form and effort. Even a couple of 4:00/km splits would get me through and I pushed hard, but wishing for the end! And as I ran past the timekeepers and stopped my clock I was alarmed to see the time!

Madness!!!
37:46!!!!!

I was really blown away by the time. I know I am in the best shape of my life, I can feel it in training but I wasn't expecting to run a time like this just three weeks in, and only five weeks out from that first marathon. The special blocks was tough and I was still thinking three weeks down the line to get into the 37s.

My dad always tells me that if the last two kilometres are not challenging then I haven't raced hard enough, so I know I really gave it everything. Additionally I managed to negative split the race, 19:04 and 18:42, so it was well paced too despite me thinking I had gone out too hard!

Breaking into the 37s also took my cumulative tally of improvements over 10km to more than 10 minutes for the calendar year. The tally now stands at 10:14 or 21% improvement. I know this rate is unsustainable and in fact since breaking into sun 40s, I have dropped two minutes over 6 months, while the previous three months saw me drop more than 3 minutes. Minutes will become seconds will become parity but I hope to carry on into 2013 still chipping away.

So looking forward, the goal for the Cid to Cid Old Year's 10km on 29 December is still 37:30 (3:45/km or 16km/hour) as my A goal. If things go well on the day I would love to try for a sub 6:00/mile pace, which is 37:11 or faster as a B goal. Otherwise just another PB to end what has really been an awesome year!

EDIT: Official results are finally out for the Great Run 10km, 37:34 for 23rd place!

Thursday, November 22, 2012

Speed Thrills: Just missing a PB and hitting the track hard

EDIT: It turns out that the Kolonnade Retail Park 10km went much better than I thought and my official time was 38:22 for 27th place out of 1672 finishers

Over the last 3-4 months, I just forgot how much I love running fast. Now of course fast is relative, on a single tracl repeat I would struggle to keep up with Mary Keitany while she is scorching her way to a sub 2:20 marathon, but for me it's blinding fast, and it's thrilling! I haven't done a true speed workout since mid August. as session of 6 X 800 at 90s per lap. My body sent out alarm signals after that workout, and to get through marathon training I dropped the fast stuff and instead supplemented my endurance runs with session of long marathon pace repeats that eventually became one continuous running. Looking back those were long arduous sessions. There was no rush just work, work, work. That's not to say I didn't enjoy them, but going round at 1:44-1:48 per lap for 5-10 laps worth per repeat is a different kind of beast to even 90s laps.

After my harrowing but amazing experience doing my first marathon I was concerned for my speed. Leading up to the marathon I had run my 10km PB of 39:04 and them lowered my half marathon PB to 1:25:28, but those races came 10 and 5 weeks before the marathon respectively. With no speed work, the only reminder that I still had anything approaching a fifth gear were a couple of ~5km time trials where I was able to hit 3:40/km splits admittedly on elevation conjusive to fast times...i.e dowhill! I had convinced myself I would have to start again.

Post-marathon, I endeavoured to take 2 weeks off but I couldn't stay away and ended up following Hal Hidgons recovery plan, well the first two weeks of it. It involves gradually easing back in and to be honest the first couple of runs hurt a lot. By week 2 though I managed a 6km tempo and the aforementioned time trial, and my legs were suddenly remembering something they used to do long before marathon training had become the routine.

The feeling the way back slowly after the marathon comeback race

I decided to enter a 10km on 17th November that promised a flat, fast and easy route. This being a Gauteng race in Pretoria, I was skeptical of that description but I really wanted to get out anyway. The race was at the Kolonnade Retail Park in Montana, Pretoria North, a bit out of the way but some careful planning, pre-entering and leaving reasonably meant it was a stress free morning and I even managed to warm up properly. Making my way to the start I was relieved to see that it looked as if walkers and runners had a separate start. A relief, I thought.

I positioned myself close to the start balloon, which I hoped would help me get away fine. While I wasn't planning to race I hate getting caught up in the pack early. Bizarrely, the runners were filling in from the front, so my position in close proximity to the start quickly became in not so proximity to the start. This meant that getting away was difficult once the gun went, 6 minutes later than the scheduled start. Then the separate start for runners and walker proved to be ineffectual as the merge was literally immediate meaning there was another bottleneck as soon as the merge took place. Grrr.

This is my pace graph from my Garmin
Ridiculous
I din;t actually start running until around 50s on my watch. Playing around with the player view on Garmin Connect it was not surprising to discover that I covered just 50m in the first 48s and 100m up to 57s when thankfully I was now at full speed.

From that point on it was just bliss. I ran a perfect race, dismissing immediately an fears I had about marathon running obliterating my raw speed. The read out from the Garmin is delight. Other than the first kilometre and the 9th kilometre, every split was below 4:00 and just one slower than 3:50. In reality I am actually in better 10km shape than I've ever been. Taking out that horrific start, I was rocking along at 3:50/km for almost 10km, and with my own loose maths, would have knocked out something in the region of 38:30. The course was 90% flat with about 60m eleveation but having just run a marathon two weeks before I will take that! My unofficial time was 39:16 just 12s short of my PB and in the race conditions and my own physical condition I think it is still a really good time and something for me to build on going forward.

To Tempo and To Interval

Whilst I have already chose my next marathon (Slow Mag, 14 April 2013) and have a rough skeleton of a shorter (12 weeks) but higher mileage program (90km/week peak and and an average of 72km/week), I have decided to keep myself busy by running fast in the forthcoming 9 weeks, starting with a goal to break my 10km PB. My goal is aggressive  sub 38:00 and ideally a 90s PB which would put me in the 37:30 range. I genuinely believe I have the leg speed to do it but I need to seriously worked on my pace stamina and also just need to be brave on race day! My training now is 6 weeks long and involves 3 weeks of stamina based efforts, 2 weeks of speed and a week to mini taper to the Old Years race in Pretoria on 29 December, a flat fast course with a sting in the tail

To work on that stamina means running my favourite workout, tempos! Tempos were staple of my running diet for the first half of the year and I believe were the primary contributor to my initial wave of PBs. They gave way to more endurance but now I can devote one weekly run to this workout. I plan to start off at 20miutes and build up to 35 minutes of tempo pace running by the end of my program. The tempos will be supplemented with cruise intervals later on as I do raw speed training. My first tempo this week was a ~7km run (7.4km it ended up as) with a 5km portion at  tempo pace. My tempo zone is 3:50-4:00 and I nailed the 5km in 19:30 (3:54 pace), right in the zone and pretty much even pace/

Today, I did a session of short track intervals, 10 x 400m, looking for control, good form and most of all consistency.While I keep thinking I have done speed work, in reality until today, I could count the number of genuine interval sessions I had done in the past 10 months on my two hands, and none of them were particularly high intensity or high volume. While I have slowly been warming up to running laps, and will extol the virtues of the task to anyone who asks, I am not overly enthusiastic about the monotony and have rather done fartleks on the road instead.

So I wasn't really sure what to aim for but since my 10km best case target pace is 3:45 I wanted a string of sub 90s 400m to get these creaky legs turning again. And since it was early on in training I didn't want to push too hard hittin 5km pace and faster.  This is how it went in raw numerical detail.

Interval Time  Pace (/km) Recovery (300m)
1 86 03:35 86
2 84 03:30 86
3 83 03:27 91
4 83 03:27 92
5 83 03:27 96
6 82 03:25 90
7 82 03:26 90
8 82 03:25 92
9 81 03:23 95
10 76 03:11 93
Average 82.2 03:25 91.1


To be honest I was really surprised with that outcome, both the pace and the relative comfort with which I managed them. Somewhere in the middle of intervals 7 and 8 I doubted I would get through but by the 9th I was good again. And the 76s was on a whim, I just decided to push a little bit harder and see what would happen. What really makes me happy is that other than the two outliers the first and the last, that is some pretty consistent running, and I didn't struggle too much as the session progressed. Later on this will be bumped to 12 x 400 and I'm not even remotely worried anymore. While I knew I would I would enjoy the tempo, I was expecting some serious burn. 

Coming up I will do some 800s and 1000s before revisiting the 400s again in week 4, then closing off with 1000s in week 5 and low volume 800s in the final week, all hopefully at this pace of 3 around 3:25-3:35, corresponding to 3km-5km pace for my target 10km time. Week 4 and 5 will also see  me doing mile repeats at cruise interval pace so closer to 8km pace just to maintain some stamina.

I have once check point, a 10km race on 8 December where I should be comfortable running at or just faster than my current PB pace of 3:54. I'm not going for any fireworks just yet and will in fact be doing that race at the top end of my tempo zone.

So post-marathon running is off to a joyful and fast start and I hope to keep it up!

Monday, July 2, 2012

12 months to a sub 40:00 10km?

Progression of 10km and 5km times over the past year or so
Well not quite!

The last 12 months have been great, and I have been really pleased with the progress I have made, particularly in 2012 with a more focused and structured approach to training. The last six months of 2011 when really just foundational, getting some miles and setting some benchmarks. This year has been about taking big strides, really massive ones.

Improving my 10km has been a big feature of my first year as a commited runner, starting way back in August last year when I ran the Vodacom Country Challenge in 51:19. I knew I would get faster, but how much faster was what I didn't know.

This past weekend I got to find out. Post Wally Hayward, even though I have bee technically just base building, the increasing intensity of my training has meant that my times have been tumbling both in what I can sustain in training and come race day. Thus with the promise and flat fast route at the Hope Starts in Hatfield event, I knew that my PB of 42:38 was barring some disaster was going to tumble. It was not a case of if, but by how much!

The venue was The Fields shopping centre in the heart of Hatfield. I love shopping mall races. Most of the shops open their doors early to take advantaged of of the hundreds of runners and of course after the race, breakfast is there on offer. But I have  a theory with the races. The constraint of having a fixed start and end point perhaps affects the distance measurement. Nothing worse that expecting weary runners to walk a long way back to the start. At an earlier event at the Jakaranda Shopping Centere in early May, I ran a sedate 64, having done is a training, but curiously my official time was a somewhat quicker 61:10. I didn't think much of it then but after Saturday's race I have an idea as to where that discrepancy may have come from.

I have been training hard and to be honest I am a bit tired but I gave this event everything. Almost too much. I set off at a very unsustainable pace, hitting the first km mark in 3:40, with 2km and 3km coming up on a downhill, that pace never relented and I went through 3km in 11:10. With that being 37:13 pace I was literally laughing at myself knowing that I was never going to keep that up. I consoled myself with that I was banking time. Something I always swear I am never going to do.

At this point we had gone past Loftus Versveld, that mighty rugby stadium, and were nowing climbing to had back towards Hatfield. This climb as shallow as it was put the brakes on that early pace as I slowed to a little of 4:00min/km pace. Four kilometres disappeared at  15:15, and went through 5km in 19:25. This is where things got a little fishy. The finish had been clearly marked at the mall and with both 5km and 10km following the same route, this point was still quite a long way from the end. Hmmm. I minded my own business as we split from the 5km runners.

The second loop was a little different around the stadium but with the same downhill portion, 4:05 pace reverted back to sub 4 min pace and I cruised through to 8km in 31:10 and then hit the 9km point in 35:10. With a little under 5min to get to 40:00 and 1km to go, a PB and a sub 40 was surely in the bag. In the first lap I had seen a 10 painted on the road close to the finish. At the start, a few of the faster looking runners, talking about running 32s were saying how they had the route was closer to 10.6km. Indeed I went past that curious 10 in 39:30! My legs were starting to give in and the end was not in sight. Clock ticked over 40, the 41 and I did the unthinkable and walked for about 10 seconds out of exasperation. Then got my legs ticking over again and finished in 42:08 on my clock but with an official time of 42:24.

So two possibilities exist here. The route was 10km and the boards were placed incorrectly. But each and every one?!?!?!? Or more likely the route was long, the boards were correct and the need to finish at the mall meant adding on an extra 5-600 metres was unavoidable. My footpod usually measures short, but in my lighter Zoom Elite's which allow me to keep up short, high frequency strides was in sync with the boards. It had me through 5km in 19:30 and 10km in 39:20, and measured a final distance of 10.67, somewhat in line with the rumblings of 10.6 km at the start. The official distance as it turns out was 10.5km.

I really felt good on the day, and felt fast and having been doing my tempos at around 4 min/km pace, I felt that with the route and with the weather that I could run a sub 40 10km. Unfortunately I will  not know at least until the next race at the end of July. My priorities are shifting now though as it is now 18 weeks to the Soweto Marathon. Breaking 40 minutes for 10km is no longer the priority and now if it happens it does.

One thing I did take out of this race was adhering to a pre race pacing plan. Already aiming for  faster than 4 min/km was beyond my PB which was at 4:16 pace. Of course having done a 5km at 3:34 pace and a 15km at 4:07 pace were signs that I am faster than 4:16 pace. However going out at 3:43 pace over the first three kms was suicidal. I could have perhaps managed 3:50 pace if I was a bit more conservative but in the end I managed around 3:57 pace which was still a huge improvement. That gives me a solid based to work off for marathon training. My goal was to get faster. Adding speed is potentially more difficult that adding endurance as opposed to get fit for long distance then trying to get faster. So getting the speed in the bank before getting ready for the long haul was always the challenge. And to have potentially taken 3:00 off a 10km time I achieved 8 weeks ago is just great.

Monday, June 11, 2012

Let the good times roll!!!!

The plateau will come. I know it will. I am expecting it too. I am of the opinion that running improvements follow a classic S-curve model:

When we start training at the base of the curve, improvements are slow, everything is tough. I spent a good 6-7 months in this phase after lacing up my shoes in June last year. It's also the easiest time to get despondent and throw in the towel, as I almost did in  December when workouts were actually getting more and more difficult.

Then something happens. It could be a breakthrough race, nailing that brutal interval session, or in my case a long tempo run. I remember the moment clearly. It was the morning of the 3rd April just before catching a flight to Cape Town and I went out and did a 10km tempo run. I did it in 46:40, nothing remarkable, except it was only a minute slower than my 10km PB at the time and that included warm up and cool down. When I was going for it, I was in a groove, just nailing the pace kilometre after kilometre, and it all felt so easy! Less than two weeks later I would do my first half marathon in 1:38:42, well inside my 'best case scenario' of 1:40 that I had set myself. And two weeks later I brought that down to 1:35:01. Four days later I had lowered my 10km time to 42:38. Two weeks later I broke 20 minutes for 5km and ran 19:25. I was now clearly in the exponential phase.

I haven't raced since that 5km and was looking forward to doing my first race in three weeks and also my first 15km race. I was supposed to do the Moreleta Plaza 16km on the 26th May but I felt a bit fatigued from overdoing it in training and wisely rested. The end results is I felt fresh this past weekend and my legs were raring to go! 

Fifteen kilometre is an odd distance. Most prediction tools jump in classic distance, 1 mile, 2 mile, 5 km, 8 km, 10 km, 21,1 km and 42.2 km. I'm a bit of a pedant and like to have some sort of strategy when running races, something I have developed since that first half marathon. I find it relaxes me to have a plan, but also the plan is not fixed and has early escape clauses to take into account weather and surprising route elements. With the route expected to be somewhat flat I used my 5km time, got a prediction for 10km and 21.1km and went for something roughly in the middle and rounding up I got an expected pace of 4:10/km, so roughly tempo pace then. I segmented the race into thirds planning to run 21:15, 20:50 and 20:25 splits for a 62:30. It was I felt a touch on the ambitious side but my motto at the moment is a rather brash go big or go home. I will pay for that someday!

On Friday, a surprise happened with the weather taking a distinct turn for the worse! The temperatures plummeted and at 7:30 start time on Saturday predictions were 2 degrees Celsius. Nasty. Thankfully the race venue, Silver Oaks Crossing, was not very far from home, a 10 minute drive so at least we didn't have to be up at  an ungodly time of the morning. I got a compression vest from my father to wear under my racing vest, got some gloves, but decided to stick with my poly shorts. When I stripped off my tracksuit at the venue I was almost regretting that decision, but after a 10 minute warm up I was feeling just about okay.

The race went well even if my pacing strategy was ripped apart pretty early on. The first km was in around 4:12 and I settled into a pace that was quite a bit quicker but comfortable, a red herring perhaps? I went through 3km in 12:00 and 5km in around 20:10. I knew the pace was a bit hot and did try and slow myself down. I got sucked into other peoples races though. There was a group of three guys that would pass me on the flats but I would pass them on any climb. The end result was that I went through 10km in 40:26, 4:03 min/km pace. I knew I would pay for it somehow later! Hey it would have be a huge 10km PB, 2:12 min, if the race stopped there but there was another 5km to go.

Sure enough I did pay for the early pace. I got sucked into another race as a guy came past me after that and he was a bit chatty. I went along with him and then we started to climb. I had read fairly flat about the race, but there was some climbing up to about 14km, long climbs broken up by short teasing straights. So predictably my pace dropped. I went past 14km in around 57:50 so my pace had dropped to 4:20 min/km. I finished strong though, putting in a sub-4 min final km to finish in 1:01:40 on my watch. That was a quite a bit quicker than what I set out to run, and with some smarter running could have flirted with running under 61 minutes. But I'm not going to complain about finishing a 15km at 4:06 pace.

In the grander scheme of things, I am still in that exponential phase of the s-curve. While I wait for the plateau there are still some fast times ahead I hope. For the rest of June I have a 5km on the 23rd and a shot at a the 10km on the 30th. At both races I'm going for good PBs. The route at the 5km race, the Take 5 team relay, is also fairly flat (though I'm getting skeptical with 'fairly flat' as a route description) and the organisers do promise a fast course, so flirting with a sub 19:00 5km or 3:47 pace is a target. The 10km race in Hatfield is a new event, but Hatfield is one the flatter areas of Pretoria so if anything I want to match the 40:26 I manged through 10km this weekend, and I'm going whisper it but a 39:XX is on the cards if I pace myself well.

On the road to Soweto, getting my speed up is the mission and so far so goo. Let the good times roll!!

Tuesday, June 5, 2012

So what's my correct training pace?

Something that I never really grasped is what pace to train at. There are of course so many training types, I'm doing short intervals, long intervals, fartleks, tempo workouts, hill repeats, easy runs and long runs. Each of these has a purpose and must therefore  be done purposefully and at the right effort. I guess the easiest way is to drop the pace constraint and to go by effort. Take that a step further and use heart rate. But I hate running with a heart rate monitor. Scratch that detest it. There's something about having that darn belt around my chest, it irritates me, I'm constantly adjusting it...anyway I digress.

My solution was to just go to a running pace calculator, like this great one from Runner's World that even does race predictions! So I've just run a race, recently the Jackie Mekler 10km in 42:38 and it gives me the following output under training pace:

  • 5:16 min/km Easy run training pace
  • 4:23 min/km Tempo run training pace
  • 3:57 min/km Maximum oxygen training pace
  • 3:39 min/km Speed form training pace
  • 5:16-5:57 min/km Long run training pace
  • 3:15 min/800m Yasso 800s training pace
Great! So on Monday, Tuesday on whenever I head out again I do my tempo at 4:23 min/km, my easy run at 5:16 and my LSD no faster than 5:16 but no slower than 5:57 min/km. Then the following week I do some 400m reps on the track at 87s per 400. Easy?

But what am I actually doing? I never really thought that all I'm doing is maintaining 42:38 form but surely that's not what I want? But if I'm training at paces computed from that as my most recent race time surely that's what I'm doing? It's like the training pace here is the end goal and not a journey when using the race pace method and that seems a bit wrong. I understand the logic that it's a good measure of what I'm capable of, particularly when shooting for a new distance. I'm training for my first marathon, so a good estimation of what I'm capable could be what my times now predict. So using my 42:38 PB run a month ago, I get an estimation of 3:16:06. Using my half-marathon PB of 1:35:01 ran four days before that 10km, I get a marathon prediction of 3:18:06. Two weeks later I ran a 5km, albeit one as flat as a pancake in 19:25, and that predicts 3:05:53!

Here's the thing though, surely this method predicts current capability with a few assumptions, the most obvious to me being you realistically plan to run the predicted distance on a route profile similar to that of the input race result? My 5km time is a useless barometer for Soweto Marathon, but might be a good indicator for a race like Slow Mag, which is also reasonably flat. However the other assumption is that you are fit and ready to run the predicted race NOW. I can tell you now I know I can't run a 32km race at whatever pace my 10km PB would extrapolate to, never mind a marathon. Heck I think I would blow out if trying to do 25km at a hard effort.

This has been weighing on my mind as my different PBs run within two weeks of each other predict times 13 minutes wide for the marathon, but also because I feel I ought to train with a goal in mind and my effort in training should reflect that. I'm am heading into the great unknown so how I do logically plan for that. I have a half marathon scheduled for 29th September, roughly a month before Soweto and that will obviously be a good gauge of what I will be able to achieve. But here's my thing, if I train at 42:38 for a 10km determined pace, am I selling myself short. I have over 5 months to go till Soweto. A lot can change and I will inevitably, judging by my progress in the first half of 2012, be fitter and faster come 4 November. Surely I want to get faster, not maintain the status quo?

When I decided to train for a half marathon I consulted a few people on what I should aim for. The first question was always, 'What have you run?'. At the time it was 48 flat for 10km. I thought of going for 1:40 but guys said that a 1:45 would be more realistically based on my 10km PB. I did a 10km, the Deloitte race in the first week of my program to get a feel for race pace since my 10km PB was from November 2011, and out of nowhere ran 45:44. It was hard, I walked a lot, I was spent, butsuddenly I was in 1:40 territory. As a relative novice, I had no control of pace and actually ended up inadvertently running by feel, ie getting the workout wrong 90% of the time. So easy for me was simply being able to hold a conversation. Tempo I just ran hard, intervals I went all out. As the weeks progressed, I was on a 10 week program, I noticed that interval and tempo workouts, at the same rate of perceived effort were getting faster with no extra work on my part. I ran 1:38:42 and then two weeks later ran 1:35:01. That second half-marathon was at a faster pace than I managed over my 45:44 10km.

Now surely if I had restricted myself to training paces for a 45:44 10km, I never would have managed a 1:35 half marathon? Or a 42:38 10km? Or a 19:25 5km? I would have condition myself for a 1:40:54 half-marathon and a 21:57 5km, hypothetically speaking.

I'm definitely leaning towards a feel based approach with a bit of mathematical prediction thrown in. For example I have four races I am focusing on leading up to Soweto, a 10km each in June, July and August and the half in September. For the 10km races I hope to take a minute off my PB each time, route, weather, health, and the alignment of the stars permitting, which would put me into sub 40 minute territory (crikey!) and a realistical shot at a sub 90 minute half marathon, in turn an opportunity for a fast debut marathon, 3:05 to 3:10 maybe, if everything is perfect on the day (I'll take a 3:30 any day!)

So how do I train for that? I could repeat the exercise above and put in a 40:00 target 10km. But the speed form pace is a blinding 3:26 and I know that is probably to hot for me right now to hit consistently over 4,5,6 up to 10 reps. I can go all out and nail it first time but I would be bushed! What I think is logical and something I'm trying to do, is to have an end goal in mind for training pace I should hit. For example I like that the Yasso 800 is tried and tested so I should be able to do 10 of those at whatever pace I aim for, and if I have done my tempos, fartleks and long run, that together should work. But the goal should be just that, the end goal. The 10x Yasso 800s are usually done just before the taper. My current pace should be a springboard to that end goal, which leads into the foot race. So right now a 4:23 tempo and 3:39 speed form should be at my 80% and 85-90% effort, but like how we increase mileage weekly to improve stamina, I should be able to push a little harder in later weeks so that 80% becomes 4:20, 4:17, 4:14 and down to 4:07 by October and equally 85-90% becomes 3:35, 3:31 down to 3:26.

So a bottom end based on current ability and a top end based on desired, but realistic ability, bridged by running on feel and listening to the body? Well that's the theory anyway.