The field I go to would be great for a race. (Chino, Ca - Prado Field). The Club there does not do a lot of events; but they did have a Scale Fun Fly last week that drew over 50 pilots. Below is a link to there site.

I know they have pylons and a PA system. Timing systems and cages they do not have. But there is a lot of new housing tracks in the area. If prompted right this site could draw a lot of spectators.

pvmac.com/