1/10 offroad...Pegasus hobbies in Montclair...about 30-40 min drive from oc
http://www.pegasushobbies.com/ or REV
http://www.revrace.com/ if you have 1/8 truggy/buggy which 5-10mins away from pegasus.
OCRC in hb is indoor...electric only
http://www.ocrcraceway.com/index.html