The Eugene marathon makes it easy to scrape all the results data off their site.
I wrote a python program to parse this data and calculate the first half vs second half splits.
I was curious to see if there was a difference between the men and the women..I had a theory that due to being less 'macho' the ladies might be a bit better at pacing...here's the stats:
|number||ave % fade||max % fade||med % fade||max % speedup|
The median fade was about the same for both men and women.