I've always been skeptical about the pinch flat. Everyone talks about how you have to be careful with your tire pressure if you run clinchers, but I usually weigh around 200 pounds and I've run my clinchers as low as 30 psi and only flatted once and I wasn't entirely sure that was a pinch flat. Well, last night I definitely pinch flatted, and I was running around 35 psi.
The thing is, I didn't know I had pinch flatted until this morning. I finished the race without even suspecting a problem, but this morning my front tire had no air.
I have a pretty good idea where it happened. There was a section of the course with a short steep descent across very hard bumpy ground. I checked the results today, and I see that there were 11 DNF's out of 90 racers in my category and 11 more DNF's out of 52 racers in the other category that raced at the same time.
We've got six more races at this same venue. We could really use some rain.