LA Hacks 2018 Los Angeles, CA, USA Join fellow hackers to build innovative products at UCLA's Pauley Pavilion $23,050 in prizes Mar 30 – Apr 1, 2018 513 participants
Hacktech 2018 Pasadena, CA, USA The world's best interdisciplinary hackathon - Hacktech! $13,127 in prizes Mar 2 – 4, 2018 218 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
SLO Hacks San Luis Obispo, CA, USA 24-hour, 200-student collegiate hackathon in San Luis Obispo $6,238 in prizes Feb 3 – 4, 2018 118 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
Alexa Skills Challenge: Kids Online Build an Alexa skill that educates, entertains, and engages kids under 13 $202,500 in prizes Winners announced 2503 participants
Hack Productivity 3 Online Work smarter, not harder with Office 365. $43,700 in prizes Winners announced 358 participants
Developer Circles Community Challenge Online Completed - 2017 Community Challenge $150,000 in prizes Winners announced 3630 participants
Minds + Machines Appathon: Ecomagination Challenge San Francisco, CA, USA GE wants YOU to develop new solutions on the Predix platform to drive the future of energy. $185,250 in prizes Oct 24 – 25, 2017 135 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
AWS Chatbot Challenge Online Create conversational, intelligent chatbots using Amazon Lex and AWS Lambda! $19,797 in prizes Winners announced 3850 participants
CHIMEHACK 4 Menlo Park, CA, USA CHIMEHACK 4 will celebrate the power of women in technology and identify ways for disruptive technology to advance solutions for girls and women at a tipping point moment in history. $30,000 in prizes Jun 10 – 11, 2017 319 participants
Amazon Alexa Skills Challenge Online You code, Alexa comes to life. Create new Skills for Alexa, the brain behind Amazon Echo. $43,620 in prizes Winners announced 4430 participants
LA Hacks 2017 Los Angeles, CA, USA Learn it. Build it. $47,300 in prizes Mar 31 – Apr 2, 2017 458 participants
HackMerced Merced, CA, USA Build, compete, learn at UC Merced's second Hackathon $7,250 in prizes Feb 10 – 12, 2017 125 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
Cal Hacks 3.0 Berkeley, CA, USA Cal Hacks - The Biggest Collegiate Hackathon in the World $49,930 in prizes Nov 9 – 13, 2016 717 participants
Autodesk App Store Forge Hackathon Online Build Apps that help in transforming the way products are designed, made and used. $13,500 in prizes Winners announced 205 participants
SD Hacks 2016 San Diego, CA, USA Hack with the Best in San Diego $32,320 in prizes Oct 1 – 2, 2016 261 participants
Hack the North 2016 Waterloo, Canada Canada's Largest Hackathon - University of Waterloo $46,050 in prizes Sep 16 – 18, 2016 685 participants
TechCrunch Disrupt SF 2016 San Francisco, CA, USA Where Great Products Are Born in 24 Hours $327,500 in prizes Sep 10 – 11, 2016 638 participants
CHIMEHACK 3 Menlo Park, CA, USA CHIMEHACK 3 will celebrate the power of women in technology and identify ways for disruptive technology to advance solutions for girls and women at a tipping point moment in history. $25,000 in prizes Aug 27 – 28, 2016 153 participants
HackDavis Davis, CA, USA UC Davis's first major collegiate hackathon dedicated to social good. $13,911 in prizes May 7 – 8, 2016 138 participants
LA Hacks 2016 Los Angeles, CA, USA Learn, Build, Play $364,280 in prizes Apr 29 – May 1, 2016 244 participants