I suppose I know why.
It's not because I suffered an injury during the race, or even during the miles I've run since then.
It's because I jammed all the training for a 100k event into a seven-week block.
If you search the internet for "7-week 100k training plan" you'll find...nothing. Because it's not something people do. Unless they're desperate or under duress.
I was both, so, yay.
And now I have residual hip pain, likely the cumulative effect of too much distance and elevation in too little time.
It might also be the result of not banking enough total miles to take on a 100k day.
Again, probably both. Yay.
I'm not complaining. My short-term goal was to get to the starting line with a chance finish...and that's exactly what I got.
Lesson learned? Most likely nothing. I did what I wanted to do, rather than what I probably should have done, and it worked out. If the same situation were to happen again (please, no), I would very likely do the same thing all over again.
Because I'm stubborn. Or stupid. Probably both.