I did the Cat 4 race. It's a nice course. I did notice that the pace was slowing for the corners, so I was trying to accelerate through them to put me into a better position for the following sprint out of the corner. My friend Rudy nearly won the race, but got chopped off during the sprint and had his front wheel destroyed (he did not crash though). My race didn't go a whole lot better. About 6 laps from the end, my rear tyre blew out in the fast right hander and I crashed out. Oof. Still, I was pleased that I felt ok during the race because I've not been able to ride or race much this year.