besides the one mentioned by Bluetree here in SoCal. ride around the bear held by OC wheelmen is time "unofficially". It's not a race just timed. The ride is sometime in June.

try ride calendar

and if you want to be added to their mailing list, it only comes out 4 times a year or so

register the list covers mostly california and some in Ut, Az, Nv, Wa, Or.

smilingcat