Los Altos Hacks X Sunnyvale, CA, USA The world's largest high school hackathon. Non-monetary prizes Apr 11 – 12, 2026 279 participants
East Bay Hackers' Winter Hackathon San Francisco, CA, USA Our Second Hackathon for anybody interested in coding or technology! $10,438 in prizes Dec 6, 2025 84 participants
Grizzly Hacks Fall 2025 Online Create, Compete, and Stand Out. $8,500 in prizes Winners announced 123 participants
Innovare Summit - Stanford University Stanford, CA, USA Students devise practical business, systems engineering, product-based, or software solutions to issues pertaining to global health crises. $5,000 in prizes Sep 17 – Oct 20, 2025 63 participants
MakerHacks II San Francisco, CA, USA Design, Create, and Iterate in the largest High School Hardware Hackathon. Non-monetary prizes Oct 18 – 19, 2025 68 participants
CogniHacks (In Person Only Event) - Full Pleasanton, CA, USA Bringing Brain Computer Interface (BCI) Applications from clinical settings to commercial applications with AI. Must sign up at cognihacks.com/join to be a confirmed participant! $2,092 in prizes Aug 30, 2025 159 participants
Hack4Hope Make your Mark in the Fight Against Cancer with the American Cancer Society Cancer Action Network! $2,075 in prizes Aug 9, 2025 111 participants
Grizzly Hacks Summer 2025 Online Create, Compete, and Stand Out. $100 in prizes Winners announced 15 participants
HackaKhan 2025 Mountain View, CA, USA Khan Lab School's 3rd annual hackathon, open to ages 13-18! Non-monetary prizes Jun 8, 2025 49 participants
Milpitas Hacks 2.0 Milpitas, CA, USA Hackathon for Middle and High School Students in the Bay Area $800 in prizes May 24, 2025 151 participants
DreamHacks 2025 Innovate for Impact – Build, Create, and Solve in 48 Hours! Non-monetary prizes May 16 – 20, 2025 322 participants
Tech Titans Hack Fest Showcase your technical prowess! $324,396 in prizes Apr 12 – 26, 2025 403 participants
AI Valley Hackathon Palo Alto, CA, USA AI Valley Hackathon is a student-led hackathon designed to push the boundaries of AI innovation. $4,000 in prizes Apr 19 – 20, 2025 39 participants
FutureHacks 7 Online A hackathon that empowers students of all backgrounds to explore ethical AI in education, fostering innovation, accessibility, and responsible technology use! $1,175 in prizes Winners announced 211 participants
Hack Cupertino 2025 Cupertino, CA, USA A high-school hackathon organized by the Cupertino YAB and Cupertino's Recreation Department to give teens a chance to destress, be creative, and become civically engaged. Non-monetary prizes Apr 12 – 13, 2025 90 participants
PantherHack 2025 Online Princeton Day School's Fifth Hackathon $500 in prizes Winners announced 52 participants
Los Altos Hacks IX Sunnyvale, CA, USA The world's largest high school hackathon Non-monetary prizes Apr 5 – 6, 2025 293 participants
Chinatown Hacks San Francisco, CA, USA San Francisco's First AI Hackathon Where High School Students Build Tech Solutions for Chinatown's Community $18,800 in prizes Mar 15 – 16, 2025 54 participants
Empower Hacks Online Impact Students Through Software $112,750 in prizes Winners announced 621 participants
WebHack Online Create apps or designs to solve a problem related to internet safety and access! $8,815 in prizes Winners announced 74 participants
Planet Unity Spring 2023 Online Bringing community together from coders, to engineers, to writers, and of course speedcubers. And of course, the 70+ hour livestream with events is going to be super duper fun!!!!! $50,486 in prizes Winners announced 184 participants