HackTrain 4.0 Greater London, United Kingdom 48 hour hackathon on a moving train! $6,945 in prizes Nov 24 – 26, 2017 111 participants
HackUPC Winter 2017 Barcelona, Spain BarcelonaTech's collegiate Hackathon. 500 hackers. 36 hours. Dream it. Hack it. Ship it. Non-monetary prizes Mar 3 – 5, 2017 256 participants
