Journey to My First Marathon – Part 4

On 12th April 2015 I took part in Brighton Marathon, my first ever marathon event. In this series of four posts I will be talking about my marathon build-up, training, performance and what I learnt along the way.

In the previous post I looked my race preparation and my pre-race strategy.

In this final post I'm going to cover my actual race performance and all the things I've learnt from my journey.

The Race

So, I'd finally made it to race day. I was fully fuelled and hydrated. Legs feeling strong and full of energy. Arrived at the start in Preston Park, Brighton in plenty of time.

Weather

The weather was clear skies and sunshine and probably a fair bit warmer than predicted. However, there was also a fairly stiff sea breeze that made it seem a lot cooler than it actually was. At this point in time I never even considered what impact the weather conditions would have on the race, probably due to a mix of excitement and lack of experience at this length of event.

I learnt afterwards from a friend on Strava that the elite runners considered the weather conditions significant enough to adjust their race plans slightly. Probably shows why they are the elites!

The start

At Brighton the elite group have their own start further along the main road. The remaining runners start in Preston Park and do a lap of the park before merging into the race with the elites. This had the advantage that I was able to work my way pretty much to the front of the start coral, crossing the line just a few seconds after the gun.

The downside of the Preston Park start is that the first mile consists of a tight loop of the park starting with a steepish uphill section followed by a matching downhill. This isn't really the best way to start a marathon as it makes initial pacing really difficult to judge. If I do Brighton again I will definitely be aiming to join the elite start group!

The first third

After the first mile was complete I quickly settled down and got into my flow. Pace at this point settled at around 4:18/km (6:55/mile). This was fractionally faster than my planned pace but it felt comfortable and I didn't feel that I was over-exerting myself so I decided to stay with the flow rather than make lots of little adjustments to pace.

By the time I reached the 14km mark my average pace had quickened fractionally to 4:16/km (6:51/mile) with my average heart rate creeping up to about 167bpm. Maybe I slightly over exerted myself on the first section of the run compared to plan and this probably didn't help with the problems I suffered in the final parts of the race.

However, at this point I was still thoroughly enjoying myself and feeling really strong. I therefore decided to pick up the pace a fraction and try to get my average pace to 4:15/km.

The middle third

Picking up the pace initially felt fine and I covered the next 10km right on my target pace. Then at about 25km (16 miles) things started to get harder. My pace started to slow and become more erratic, averaging out at about 4:23/km and heart rate reached an average of 171bpm.

At 28km I pretty much accepted that the goal of a sub-3 hour marathon was beyond me. I decided to settle for maintaining my new pace as best as possible, which would still result in a very acceptable time.

The final third

The last part of the Brighton Marathon course is particularly mentally tough. After going through the centre of Hove you head out into an industrial area, with a loop around the power station. There's much less crowd support in this area and very little scenery to keep your spirits up. It's just a case of focusing on your running, gritting your teeth, counting down the kilometres and thinking about the finish.

By this time I was really beginning to suffer and my pace got slower and slower, averaging off at about 4:30/km (7:15/mile). I did however have the mental presence to realise that my earlier good pace meant that all I need to do was keep going and I would still be well within my target time range.

The last 3 kilometres

Those final 3 kilometres were a mix of pain, daze, excitement, hell, enjoyment, perseverance and pleasure. By this time my left glute was rebelling and delegating a huge amount of extra effort to the hamstring. This muscle was in turn getting tighter and tighter with every step. As I went past runner after runner stopped at the side of the road with cramp I knew I just had to keep on moving.

Fortunately by this time I'd made it back into Brighton and the cheering crowds along the seafront and promenade were a massive boost. If you look at some of the race photos, you can see me alternating between pained grimaces one minute and happy smiles the next.

Current pace had dropped to an average of 4:46/km (7:40/mile) for each of these last 3km. However, my watch was displaying an average race pace of 4:23/km (7:04/mile) so I knew I was on for a good time and I therefore didn't try to push any harder and risk a blown hamstring.

The finish

As the finish came into sight I tried to muster up everything I had for a final sprint, and I managed somewhere to pull out a 4:23/km pace for the final finish straight. I crossed the line with a huge smile on my face and a finishing time of 3 hours, 5 minutes and 19 seconds!

Yes, 3:05:19 for my first marathon. I was elated and not at all disappointed at missing that 3 hour mark. In fact by the time I'd reached back pick-up I was already planning my next marathon and how I would knock off those extra 5 and a bit minutes. It was also great to fire up the Brighton Marathon App and see that I finished in an amazing 160th position (165th on chip time), far higher up the standings than I ever thought was possible.

Recovery

I met up with my family and, as suggested by my sports masseur, I went and stood in the sea for 10 minutes to give my legs an early ice bath. It was then straight into compression tights and off for a nice meal to celebrate. Sunday evening and Monday morning were a bit painful as my legs started to stiffen up, but another ice bath and keeping active really helped. By Tuesday morning everything was feeling good again and with a couple of sessions on the foam roller I was out doing a 5k recovery run on the Thursday morning.

Race Assessment

So, I've finished my first marathon in a really good time, but I struggled at the end. My recent half marathon PBs suggest I could have gone faster, so what let me down?

Pacing

I did go out at a slightly faster pace in the first third than originally planned, but only by about 3 seconds per km. I also felt that I was running the first third at a relatively comfortable effort. By half way I was slightly up on where I had expected to be but spot on for a 3-hour time. All I needed to do was maintain a steady 4:15/km pace for the second half of the race. This should have been achievable based on my training and recent half marathon experiences.

I'm not sure whether I underestimated how tough the second half would be or whether the weather and hydration difficulties described below caused my pace to drop off, but I still think I'm capable of running the 4:15/km average pace for the entire distance.

Nutrition

I think I got my nutrition pretty much spot on. At no point did I feel depleted of energy and I certainly didn't hit the legendary 'wall'. After the race was complete I didn't experience any post-race energy dip or excessive tiredness so I think I must have got both my pre-race and in-race fuelling correct.

Hydration

It was hydration that I think really killed the final stages of the marathon for me. I found drinking from the paper cups far harder than I expected. I found that at most drink stations I spilt about half the water while trying to collect the cup and squeeze the top together into a funnel. This meant that I was probably only getting a couple of mouthfuls of water per drink station.

Given the weather conditions (see below) I think I was therefore loosing far more liquid than I was taking on board, even though I took a drink from every station. This certainly accounts for the gradual loss of performance in the later stages plus the early signs of muscle cramps in the last few km. I certainly wasn't unique in this situation as I saw so many people suffering during the last 10km, many having pulled up with cramp.

With hindsight I probably should have made the effort to slow down at the drink stations so as to not spill so much and therefore be able to get more water on board. Someone also mentioned in their post-race analysis that they got their wife to pass them drink bottles at a couple of points in the race. I'd never thought of that, but it's certainly an option that I will consider having available in the future.

Weather

Coupled with the difficulty I had taking on water, I think the weather conditions on the day contributed significantly to dehydration problems. It was a clear, sunny and warm day. However, the stiff sea breeze made it feel much cooler than it actually was. I think this resulted in a number of things happening:

1. Extra effort was needed to run into the wind at a few points along the course. This resulted in more exertion that I didn't take account of in my pacing.
2. The higher than expected temperatures and warm sun was causing more perspiration than expected (certainly much more than I'd been used to in any of my early morning training runs), but I didn't feel that I was getting hot at any point due to the cool breeze.
3. The strong breeze was drying perspiration very quickly so it wasn't obvious just how much fluid I was loosing from sweating.

In all my previous races all I’ve needed to worry about was pacing in a head or tail wind or looking out for sunburn. This was the first race where weather had a significant impact on my performance and, given the length of the race, I needed to take it into account, but I didn’t do so successfully.

Learnings For Next Time

So, I’ve completed my first marathon in a really good time. I’ve got my good-for-age time for London in 2016 (unless they change the rules/requirements). What did I learn that I will do different next year?

Training plan adjustments

I was really happy with the P&D training plan that I followed. It seemed to work very well for me and the pacing discipline and strong scientific grounding really allowed me to have confidence in the plan.

The one change that I would make when using it again would be to add some additional marathon pace work and adjust when this occurs in the run.

First off I’d make sure that all of my long runs finish with a couple of kilometres at marathon pace. I feel that this would better prepare my legs for dealing with that last few km of the marathon when they are tired and when maintaining pace is essential for a fast time.

Additionally, in the plan there were a few marathon paced long runs, but I executed them as a short warm-up, marathon pace section and then the remainder of the long run at slow pace. When following the plan in future I will do all of the slow pace work first and then position the marathon pace work at the end. Again, the goal will be not to teach the legs to run a marathon pace (they can already do that) but to teach them to do it when they are tired.

Hydration strategy and practice

If the next race I do is planning to use paper cups for water I’ll be setting up a drinks station in my road and practicing and practicing until I can pick up cups and drink a decent amount from them without spillage! I really should have done that before Brighton but I just didn’t consider it such an issue.

I’m also certainly going to be going away and researching hydration strategies, fluid loss to perspiration and so forth. There are systems you can use whereby you weigh yourself before and after runs at different efforts and in different temperatures. From these it is possible to determine your expected rate of fluid loss and then use this as to plan and influence how much and how often you need to drink during a race. I plan to never go into a race again without having full certainty on how much fluid I need to consume.

Finally, if I have supporters coming along to cheer me on at my next marathon I will be making sure they are each armed with a disposable bottle of water with an added electrolyte tablet. That way if I’m struggling to take on enough water at drink stations I can always be sure that there will be a good alternative option available.

Strategy improvements

I still think my pacing strategy was reasonably sound and I think I followed it fairly successfully. However, for my next marathon I will aim to be much more precise with pacing in the early part of the race and not let myself get too carried away (even if it’s only by a few seconds per kilometre).

I’ve also learnt that as the distance of the race increases I need to take much more note of the weather conditions and adjust my expectations and pacing plan accordingly. In particular, I need to make sure I’m not over exerting into a headwind and getting the most from a tailwind rather than trying to maintain a consistent pace throughout.

The Next Marathon

Now that my first marathon is complete I’m already planning the next. Provided the rules don’t change I’ll be planning to exercise my good-for-age entry into the Virgin London Marathon in 2016. And I’ll be working really hard to get that sub 3-hour time on my next attempt.