HackDavis 2026 Davis, CA, USA // create for social good_ Non-monetary prizes May 9 – 10, 2026 429 participants
UCI Design-a-thon 2026 Online UCI Design-a-thon is the largest collegiate design hackathon in Southern California, where participants design, prototype, and pitch a product in 3 days. $5,448 in prizes Winners announced 417 participants
FullyHacks 2026 Fullerton, CA, USA CSUF's premier 24-hour hackathon, uniting 150+ students to build impactful projects, network with industry pros, and compete for prizes. $1,000 in prizes Apr 18 – 19, 2026 165 participants
IrvineHacks 2026 Irvine, CA, USA Create. Connect. Inspire. $10,200 in prizes Feb 27 – Mar 1, 2026 388 participants
