DiamondHacks 2026 San Diego, CA, USA San Diego's Largest Hackathon $25,710 in prizes Apr 4 – 5, 2026 366 participants
BeachHacks 9.0 Long Beach, CA, USA BeachHacks is CSULB's annual hackathon $600 in prizes Mar 21 – 22, 2026 137 participants
IrvineHacks 2026 Irvine, CA, USA Create. Connect. Inspire. $10,200 in prizes Feb 27 – Mar 1, 2026 388 participants
