How to Run 50 Miles: Part II – Beyond Pure Fitness
I’m going to expand on the first principle I stated in Part I, that I think the outcome for endurance events are more driven by factors beyond raw fitness than of fitness itself. Nutrition, mental focus, pacing, gear and other factors are just as (if not more important) than how high your VO2 max or lactate threshold is.
Let me explain. In my last 50K race, The North Face Endurance Challenge in Marin Headlands, I was never once out of breath on the course. However, I clearly suffered greatly and my result did not reflect my fitness. How could this be? Simple. I did the following things:
- I went out way too fast, running the first 8-10 miles about 10-15% faster than I should have. It didn’t feel that way during the run, but in hindsight this was the case.
- I bonked hardcore after 16 miles. I hit mile 16 having consumed a couple gels and a few pieces of banana and boiled potato. This might seem enough calories, but given the course severity it took almost 3 hours to get this far and that was way too few calories. Also, given I was running faster than normal my caloric burn rate was far higher than normal training.
- I had terrible shoes for this course. I wore Mizuno Waverider running shoes. They are lightweight training shoes, meant for smooth pavement. I also wore them for the Ron Herzog 50K and realized they weren’t great on trails, but I didn’t remedy the problem. I was slipping and sliding all over, given how wet and muddy the North Face course was. Footing was a real issue during the race. I would slow down my pace at times and it just took way too much mental energy to focus on where my feet were going.
- I ran carrying a single water bottle. Big mistake, as I slowed down in the second half of the race, I would run out of water/calories between aid stations and just suffer. Rookie mistake. I should have carried two bottles or used a hipflask system. Had I not bonked I would have been fine with 1 bottle, but the slower pace after mile 16 meant I was running/walking slow and needed more fuel between aid stations.
- I wore a great Gore-Tex running jacked which kept my upper body warm, but my legs were freezing cold given the rain and the fact that I slowed so much. Studies show that cold muscled perform worse – far worse – than warm muscles. My legs were frozen for most of the race. This was of course exacerbated by my bonking and slower pace after mile 16.
Had I addressed these things by wearing appropriate clothing, using proper trail shoes, carrying more fuel and starting out more slowly (and using walk breaks early on); the result surely would have been very different! Live and learn! Addressing the non-fitness related variables has a big impact on race day. The longer you plan to go, my opinion is the more these other things count. Especially, bad footwear can easily take someone out of commission in an ultra-marathon (a bad blister or foot issue can bring down the toughest runner!). Same goes with an incorrect fueling strategy.
Will continue this multi-part post later.
Going for a 90 minute run on some flat dirt trails today. I trail tested my new Inov-8 Roclite 295′s yesterday. They are too small…back to the store they go!