OCCHacks Costa Mesa, CA, USA OCC's Third Hackathon — 30 Hours, One Project $2,000 in prizes Oct 10 – 11, 2026 101 participants
BeachHacks 9.0 Long Beach, CA, USA BeachHacks is CSULB's annual hackathon $600 in prizes Mar 21 – 22, 2026 137 participants
