Hi Tim:
Closest is the Alameda Aero-Nuts, my club, that flys at a dedicated CL-only model field run by the City of Alameda. Paved circle, grass infield. You can spot the field by doing a Google Earth view of Alameda and the intersection of Doolittle Drive and Harbor Bay Parkway. About 15 miles from Richmond. Next is the multi-use CL and RC field at Davis, CA about an hour up I-80 towards Sacramento, hosted by the Woodland-Davis Aeromodelers. This is the site of most contests in the NorCal area. Third is the Napa CL circle, where Dave Fitzgerald practices, a beautiful all-paved site that hosts speed contests as well as stunt. About 45 minutes from Richmond. Lots of good CL to be had in the San Francisco Bay Area. I am sure you could get a loaner model from any of a number of the locals. Send me a PM for more info.