Earlier this week the USATF published the complete set of splits for every runner for the 2008 Olympic Marathon Trials. Ordinarily splits would not be a big deal, and in fact they’ve had 5K splits available for quite some time now. What makes these splits unique is that there are 50 of them!! Due to the fact there was a timing mat every 5K (plus the finish line and half marathon mark), and that the marathon route was a 5-lap course, the 5K split mats picked up splits for all the other times each runner passed over them. Pretty nifty.
Being numbers geek, I naturally plunked all of my own split information into a spreadsheet and went to work. And being a map nerd, I naturally plunked in the elevation profile as well to see how the hills influence my splits.

The above chart shows a lot of what I already knew: I slowed down during the race. Duh. But due to the better resolution of the splits, I could see exactly where and by how much. It looks like someone flipped a switch in me right after 15 miles that said, “You run slow now!” Splits dropped abruptly from sub-5:20 to 5:30+. The good news is that I had nothing slower than 5:53-pace. There was a 5:48 in there, but then pretty much everything else was all faster than 5:40-pace. This is all helpful to me, since I did not wear a watch during the race.
I thought an interesting overlay would be to add the elevation profile, my previous split pace, and my overall pace to a graph. This would answer the question: how much did the uphills slow me down (and uphills speed me up) throughout the race?

My elevation profile isn’t quite calibrated with the USATF certification, so it is a little shifted in places. Plus, the pace graph is shifted a little forward, since it is the pace of the previous split. BUT, the relation between the two major hills of the course with my pace is quite obvious, and kind of cool to look at. You can see the same pace pattern for the last four laps of the race (the first lap we were all steadily accelerating due to the slow start).
From the graph, I can see that early in the race I was running 5:00-5:05 on the downhills and 5:20-5:25 on the uphills. Late in the race, I was managing ~5:15 on the bigger downhills, but 5:40-5:50 on the uphills. From training in Utah, I am a pretty good downhill runner, so it doesn’t surprise me that I could hold it together better on the downs, even late in the race. That is a result of training specifically for St. George, and I did notice during the race that I passed or made up ground on quite on few runners during the downhill sections.
Although I didn’t hit a real Wall during Trials, it is obvious that fatigue worked its way into my legs after Mile 15 or so, and the repetitious hills worked me over as the race progressed. Clearly, I have work to do on my strength and endurance.
But that’s it for thinking about Trials! It was a blast to run, but it is past, and now it is time to look forward to the future: more training and more big races!









