LAUNCH Hackathon 2015 San Francisco, CA, USA Launch 2016 here: launch.devpost.com/ $101,500 in prizes Feb 27 – Mar 1, 2015 1310 participants
Hack The North Waterloo, Canada Canada's Largest Hackathon - University of Waterloo $1,000 in prizes Sep 19 – 21, 2014 623 participants
