I didn't do this Masters 55+/60+ race in Ontario, CA this past Sunday, but two of my teammates did:
http://www.youtube.com/watch?v=NM6OV...MGNfEbu_BB2clA
The video is about 7-1/2 minutes long. The age groups race together and get scored separately. There is also separate SoCal Cup championship points for each age group.
My one teammate is on the front row, camera right at the start and you can't miss him. I think he's about as tall as AzTR. He's wearing our new kit. My other teammate ended up 10th in the 55+ and he's wearing last year's kit -- mostly dark blue with pink accents. You'll see him tail gunning throughout the video and he has a very good sprint.
Anyway, it gives a good feel for 55+/60+ crit racing in SoCal.