I live over by Alviso. I primarily race at Hobbyworld in Gilroy, really nice permanent carpet track.
Sheldon's - Not racing yet. Plans are pending.
Our local club (RCCAR - www.rccar.com
) holds races at Cambrian Plaza
Theres also Hobbytown in Fremont but I haven't been there. Very popular outdoor track though. They race in the Fremont Hub on selected Saturdays