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!

Humbled and Rewarded

The last three weeks have really hit home just how tough marathon training is, and should be. For fours weeks I had been coasting. I was doing my quality sessions, hitting my targets, I ran under 40min for 10km for the first time and followed that up with my longest ever run of 26km. So comfortable was that run, that I turned into a progression run, hitting my target marathon pace for the last 3 or 4 km. I headed into week 5 full of confidence.

Then reality hit. The following speed session was a 6X800m at 10km pace, and unlike the 1km repeats I had done the week before it just never felt comfortable. My hill circuit on Thursday, despite doing the 8km double lap around WITS in a personal record, felt forced. My rest day on Friday didn't allay the fatigue and my weekend double, despite cutting back my long run to 18km was hell.

This is what fatigue felt like.

I then had a long chat with my father/coach, from both those perspectives, and we charted the way forward. While it is expected that marathon training should be tough, he was worried that in the excitement of improving and getting better and stronger I was beginning to push over my limits. I was beginning to actually dread pushing myself, and with a tube up 10km  coming up that was not a good sign. We agreed on a mini-taper/TLC week to freshen up for the 10km and then to focus on some marathon specific training. Basically, I was doing a lot of speedwork, at 5 or 10km pace, and a lot of hills. The key now was to prep my body for the rigours of marathon training and to abandon raw speed and strength. I'm not going to lose the speed and strength I've gained in the next weeks, and it's a good opportunity to 'fix' the gains such that I can translate that to my goal of running a good début marathon.

On the morning of 26 August, heading out to run the Wanderers Challenge 10km in Melrose, I was filled with some trepidation. Not only was I nursing this fatigue, I was developed a sore throat and I had struggled to sleep. At least with Spring on the horizon the weather was better. And this time, having pre-entered, there no registration queues to negotiate.

My goal was to once again start easy, check out the course, maintain and finish strong. I like to do it as 3-4-3 effort, 3 km steady, 4km at target pace, 3km strong finish. I did a 3-4-3 but not quite as planned. The start was fast, with some nice downhill. I passed 1km in around 4:05 but with the slopes my pace picked up, the first 3km was covered in 11:45.

The next section was tougher, involving a bit of climbing and gentler downhills. The course was undulating, just the sort I hate and while I slowed down, I was consistently on 4min/km pace. I went through 5km in approximately 19:45 and remember at 7km my time was at 27:46. It was difficulty to accelerate. At Zwartkop 4 weeks earlier, I found that I was able to gradually crank up the pace due to the flattish nature of the course by here my pacing was all over the place.

A sub 40 was definitely still on the cards as was a PB but the 8th kilometre hurt. My slowest by far and the longest toughest climb. I passed the 8km at around 31:55. I knew it was predominantly downhill from here, but in less that stellar condition I was feeling weak. A random guy caught up to me and shouted at me,"C'mon we're on for sub 40". It was the boost I needed and I stuck to him. He was flying down the hill and I followed.  He left me towards the finish but those last two km secured a new PB. Officially through the finish at 39:04, 3:54/km pace and 25s improvement over 4 weeks on a much tougher course.

My goal had been a minute off my 10km time in each of June, July and August, and my 10km  time has dropped 42:38 down to 39:04. This will be my last 10km race for a while, so it's a good time to reflect on the great year I've had at this distance. On New Year's day my 10km PB was a decent 48:00. I set myself the goal, one of three, of running sub 45 before the year is our. That time has been lowered 4 times in 6 attempts, in sequence, 45:44, 42:38, 39:39 and now 39:04, and you can throw in a 10.5 km race in 42:24 in there as well. So two thirds of my 10km races under the end of year target and a third under 40 min. To say I'm chuffed is an understatement.

This week has been largely uneventful. I have limited myself to one long interval session and an easy run. This weekend it's back to the grindstone, with a 25-28km long run leading to my first ever 32km. Then it's the hilly City2City Half Marathon, the final checkpoint before heading down the road to Soweto.

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.

The PB run continues...

This morning I'm still beaming from another uplifting race weekend. After my 15km two weeks ago, I posted about the S-curve and were I felt I was in the scheme, and also the impending plateau when I'll have to start working a lot harder for just a few seconds gain. Right now though I need to just keep on training and just riding the crest of this crazy wave I'm on until it's loses steam.

To be honest, I haven't necessarily felt any faster since that 15km. I put in two quality speed sessions since then. On the  12th, I use what is possibly the only useful bit of flat on WITS main campus to do short intervals. It's approximately 300m. I did six repeats aiming for 60 seconds and I did them all in  59-61 seconds, jogging back to the start as recovery. This past week I was on leave so I took the opportunity after dropping my son off at school to do some quality. On Monday, I submitted my entry for the Runner's World 1km Challenge, doing that in 3:22. It surprised me actually how difficult one all out kilometre is but considering in February doing an 800m in 3:05 was too much for me it's a lot of progress. On Tuesday morning I hit the track, and did 5 X 400m aiming for 80s, and once again I was consistent doing one at 79, one at 82 and the remainder on the money. I finished off the session with an 800m and managed 2:44. On Thursday I headed back to Centurion for the Nike+ Run Club aiming to really let fly now that I know the course. I covered the ~3.5km loop in 13:14, 3:46, which I was chuffed with considering that at times when navigating the mall bits it's almost an almost course and there is some human traffic to contend with.

All that fast stuff did mean that I was a little jaded come Saturday morning when it was time for the Take 5 Team Relay at the Waterkloof Airbase. And when it started to drizzle on the way there I was feeling a bit gloomy. The rain cleared away and even though there was a chill in the air it was pleasant. And with the route being the flattest that I have ever witnessed at a race fast times were there for the taking. My only concern was the changeover area which as I guessed would get cluttered but thankfully I was doing the first leg so it wasn't going to be too bad.

The race was scheduled for an 8am start, another boon as the extreme chill of the morning was almost certainly gone. This was only my third 5km and I'm still none the wiser as to how to approach the distance. It's almost certainly too short to have a strategy but equally go out too fast or too slow and there are consequences. A 10km makes sense, steady for 4km, hit optimum pace to 7km then give it horns to the finish!

Once the gun went, there was the obligatory battling with walkers and joggers who had pushed to the front. By the time we got off the grass and onto the tar thankfully we had cleared them. There were some serious looking athletes and those pesky juniors that have endless pace, and I got sucked into that early pace. Then came the first panic. My watch hit 4:00 and there was no sign of the 1 km mark. But already I was breathing quite heavily. At 8 minutes so 2 km mark. My  Nike+ foot sensor is optimized for my easy training pace of around 4:55-5:00 min/km so it under measures at race pace so that was no use. The water point was coming up and that was supposed to be halfway but I check the time, 9:57 as I pass through. Now I'm getting tired and double my time is 19:54, surely not.

I soldiered on but the one glimmer of hope was that I still hadn't lost sight of the lead bike. It was starting to get further and further away but after 12 minutes I could see it at a bend in the corner of my eye. At 15 minutes I see the Sportsman's Warehouse balloons for the changeover point and I can here the announcer calling the team numbers. So close. As I'm about to hit the grass with the finish in sight, my clock hits 17:00. Another 'surely not' moment. I stride to the finish, I can hear my dad cheer me on, see my wife pull out of the change over area, hand her the baton and stop my clock.

17:49!

No freaking way!!!!! My first instinct is not to celebrate but to question the route. It must be short surely, must be. I play this silly game in my head until the end of the race. My father ran the last leg. He was recovering from a cold so didn't go all out but planned to hit 4:00 min/km and then finish strong. His experienced legs can dial a pace almost at will and sure enough he finished in 19:30, with no qualms about the distance.

So an new PB. I'm still over the moon. A 1:36 improvement and managing 3:34 pace over 5km is something I would not have imagined in February, never mind June last year. I think it might have just been once of those days, 1) weather was perfect 2) it was as flat as a pancake 3) the pace was hot at the start and I got into the mix and just hung on.

Of course I have been doing a lot of hard training and it's giving back now. My average for the last 7 weeks since the week of Wally Hayward and Jackie Melker has been 46km, with weekly totals ranging from 41 km to 51 km. That has been a mix of speedwork (intervals and tempo sessions) on Tuesday, hills on Thursday and 12-16 km long runs on Sunday. So while for me it has been conditioning and preparing my body for the rigours of the marathon training that is still to come, another way to look at it is that I have been doing an intensive 8 week 10km program like the sort you would find on Runner's World. Indeed I'm doing a 10km race on Saturday and this is now the 8th week since that double header week.

I'm looking forward to Saturday's race and like the last two races I'm going to give it my all and just let the legs go. Then I have another two weeks before I start focussing on the marathon from the 16th July.

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.