Opportunity Hack 2015 San Jose San Jose, California, USA Build. Connect. Empower. $7,000 in prizes Oct 3 – 4, 2015 445 participants
LA Hacks 2015 Los Angeles, CA, USA The West Coast, Best Coast Hackathon is back. LA Hacks 2015. $13,100 in prizes Apr 3 – 5, 2015 309 participants
HackUCI Spring 2014 Irvine, CA, USA Premier hackathon in Orange County $2,900 in prizes May 24 – 25, 2014 118 participants
