DiamondHacks 2026 San Diego, CA, USA San Diego's Largest Hackathon $25,710 in prizes Apr 4 – 5, 2026 366 participants
Datathon 2026: Data4Good Santa Barbara, CA, USA Collaborate, innovate, and build data-driven solutions to tackle real-world challenges and shape the future of technology. $3,500 in prizes Feb 21 – 22, 2026 100 participants
SB Hacks XII Isla Vista, CA, USA Make Waves at UCSB's 12th Annual Hackathon Non-monetary prizes Jan 10 – 11, 2026 342 participants
