Teca Hacks Online Manteca’s Largest Hackathon: Build Big, Win Bigger. Non-monetary prizes Winners announced 297 participants
MountainHacks 2025 Mountain House, CA, USA Hack the Heights - A 12-hour hackathon for high-school students of all experience levels, taking place on November 8th at MHHS! $12,460 in prizes Nov 8, 2025 189 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
PennApps XXVI Philadelphia, PA, USA Create. Design. Build. Reimagine the future. Non-monetary prizes Sep 20 – 21, 2025 257 participants
NextStep Hacks 2025 Online Breaking limits, one idea at a time. $1,000 in prizes Winners announced 891 participants
LaunchHacks IV Online The fourth iteration of LaunchHacks: LaunchHacks inspires people to be creative, innovative, and LAUNCH their own initiatives through the power of technology and programming. $17,375 in prizes Winners announced 1508 participants
Pike Labs App Challenge Online Create a web or mobile app that utilizes real world data to solve a problem for an individual user $3,000 in prizes Winners announced 244 participants
GNEC Hackathon 2025 Spring - Compete For UN-Affiliated/NGO Internships & Prizes Online Create projects benefiting UNSDGs for a chance to work along UN affiliated NGOs! $10,000 in prizes Winners announced 1658 participants
Los Altos Hacks IX Sunnyvale, CA, USA The world's largest high school hackathon Non-monetary prizes Apr 5 – 6, 2025 293 participants
LG Hacks San Jose, CA, USA High School Hackathon In Los Gatos $1,200 in prizes Mar 23, 2025 128 participants
MakerHacks San Francisco, CA, USA Design, create, and iterate in the largest high school robotics hackathon. $7,444 in prizes Feb 1 – 2, 2025 58 participants
Random Forest Hackathon Pleasanton, CA, USA Data and ML Hackathon For Students $700 in prizes Dec 21, 2024 – Jan 5, 2025 178 participants
Bay Hacks Online Hackathon for Middle and High School Students in the Bay Area $47,000 in prizes Winners announced 199 participants
HackaKhan 2024 Mountain View, CA, USA Khan Lab School's 2nd annual hackathon, open to ages 13-18! This year's theme is EdTech. Non-monetary prizes Jun 8, 2024 109 participants
Milpitas Hacks Milpitas, CA, USA Create innovative projects for social good while competing for prizes at Milpitas Hacks! Sign up at milpitashacks.com!! $1,610 in prizes May 25, 2024 75 participants
MountainHacks 2024 Mountain House, CA, USA A 14-hour hackathon for high-school students of all experience levels, taking place on April 20, 2024, at Mountain House High School! $11,025 in prizes Apr 20, 2024 87 participants
Los Altos Hacks 8 Sunnyvale, CA, USA The world's largest high school hackathon $4,134 in prizes Apr 6 – 7, 2024 217 participants
