IrvineHacks 2026 Irvine, CA, USA Create. Connect. Inspire. $10,200 in prizes Feb 27 – Mar 1, 2026 388 participants
RoseHack 2026 Riverside, CA, USA UC Riverside’s largest hackathon: January 24-25, 2026 Non-monetary prizes Jan 24 – 25, 2026 130 participants
