Bay Area Math Circle
Features The Bay Area Mathematical Olympiad (BAMO) and weekly program for San Francisco Bay Area high and middle school students.
Bay Area Math Meet
Annual, all-day competition featuring both individual and team events. the core events include Math Bowl and Test of Ingenuity. Website contains detailed description, past exam, and results.
Math Challenge
Sponsors by Lawrence Livermore National Laboratory. Students participate in a one-hour written test both individually and as a team.
Santa Clara University High School Mathematics Con
An annual High School Mathematics Contest usually scheduled on the second Saturday in November. This is a three hour exam which tests problem solving skills and mathematical ingenuity.
Stanford Math Tournament
Annual math event sponsored by the Stanford Mathematics Department. Site contains results, past tests and solutions.