hack:now Online hack:now — Current events and Future solutions $6,240 in prizes Winners announced 880 participants
SacHacks 2020 McClellan Park, CA, USA Design. Code. Launch. $8,140 in prizes Feb 22 – 23, 2020 80 participants
TreeHacks 2019 Stanford, CA, USA Join us as we build apps, hardware, & community in the California sun! $114,600 in prizes Feb 15 – 17, 2019 563 participants
HackDavis 2019 Davis, CA, USA UC Davis's premier hackathon for social good $10,810 in prizes Feb 9 – 10, 2019 320 participants
HornetHacks Sacramento, CA, USA We are proud to host the official all-major joint Hackathon for Sacramento State University! $600 in prizes Apr 8, 2018 14 participants
TreeHacks 2018 Stanford, CA, USA Join us as we build apps, hardware, and community in the California sun! February 16-18th at Stanford University. $76,250 in prizes Feb 16 – 18, 2018 331 participants
HackDavis 2018 Davis, CA, USA UC Davis's premier hackathon for social good is back with 3 main tracks: education, environment, and health. Non-monetary prizes Jan 20 – 21, 2018 323 participants
Cal Hacks 4.0 Berkeley, CA, USA The worlds largest collegiate hackathon held at UC Berkeley $172,386 in prizes Oct 6 – 8, 2017 719 participants
HackDavis 2017 Davis, CA, USA UC Davis's annual major collegiate hackathon is back with 3 tracks: education, environment, and health. $8,875 in prizes Jan 21 – 22, 2017 259 participants