josh,
one night of racing? that sucks. ours is tuesdays and thurdays. the races are broken down into four groups. A being the fastest and D being the slowest/newest. tuesdays is HIGHLY competitive and has cash prizes. we have so many pro's and olympians and so on out here, the A and B races are FAST! thursdays is more laid back, less officials, less entry fee's and no cash prizes.

i can't wait for this:
http://www.colorado-velodrome.org/idgp.htm