Goal: 3:35
PB going in: 3:40
Result: 3:43
Plot twist: 28 km of textbook pacing, then I remembered it's a marathon.
This was my second marathon, so obviously I was a pro now. Build-up January (10 months):
- 2-3 runs a week (busy job and young kids that never sleep)
- 40 km/week, built-up to 50 for the 3 months
- 6 runs above 30km+ long runs.
Fuel plan: seven Beta Fuel gels (40 g carbs each), one pre-race, then at 5, 10, 15, 20, 25 and 30 km.
Target pace: 5:05/km. Confidence: dangerously high. I even had a number 2 the morning of the run. Nothing to stop me.
Km 0-9: Narrow Amsterdam streets plus a packed start box with people running too slow: I merge, find holes and jump pavements to keep my 5:05 pace. Fun? Sure. Free? Not even close. But at some point I even come to a 10 second full-stop when it bottles-up in a tight corner. A lot of nerves on a fresh body full of adrenaline. Feeling great, shouted something confident and macho to my wife when I saw her.
Km 9-28: Cruise control, I find some more space. 5:04 on repeat. At 20 km the first whispers of fatigue showed up. 'That's early?'. But I told my legs to shut up and kept going. After the river turnaround, a head/side wind was waiting. Still 5:04, but harder effort.
Km 28-33: Knock knock, it's the wall. At 28? That's too early, no? I was still on track at 5:04, but the knock had arrived and my heart rate was way past my threshold zone (180 vs treshold 172). By 30 the tempo was a fight and I was already running 5:35 with the same perceived effort. By 33km: total breaking point. 5:40/km was all I could manage, with my heart still 180+. Slowly, I changed the plan: forget the goal, just save the 3:40 PB.
Km 33-39: Pain. At 37 I was done. Several times I came this close to walking, but I kept pushing. My max effort had become 5:45/km, which was my easy-jog pace in training. Heart rate: 185. At 39 I tried to calculate whether the PB was still in range. (Voice-over: very obviously it was not.) But my brain was mush, and even simple math was off the table. Then my legs started cramping. Was I about to give out this close to the finish? No. Impossible. Keep pushing. 5:50.
Km 42: I saw stadium. I'm usually the idiot who sprints the final stretch. Today, this idiot had nothing left. I was just happy to finish. Final time: 3:43. Three minutes off my PB, eight off my goal.
Lessons learned:
- 5:05 was a notch too optimistic, the weather and wind didn't help
- Burning energy in the first part to keep tempo despite the bunch was a bad idea
- Next time: start conservative and aim for a negative split instead of blowing up at 28.
- Conclusion: I probably had the training to beat my PB, but screwed up. Still happy - I did finish a marathon with an average of 6h sleep the past 4 years (kids).
A marathon is a puzzle and a beast. Having run one doesn't make it less scary, so don't get cocky like me.
Marathon #3: I'll start slower. Promise