McHacks Montréal, Canada Canada's finest hackathon, mon chéri. $5,330 in prizes Feb 21 – 22, 2015 355 participants
HackMIT Cambridge, Massachusetts, USA 1000+ people, $10k+ prizes, 30 hours. October 5-6, 2013 at MIT. Open to all students, all schools. $15,000 in prizes Oct 5 – 6, 2013 693 participants
