A hackathon can be an event, typically lasting from 24 to 48 hours, where individuals or teams combine efforts to engage in collaborative, fast-paced programming or project development. The term "hackathon" is often a combination of what "hack" (within the sense of exploring or creating something quickly, definitely not related https://lhcathome.cern.ch/lhcathome/show_user.php?userid=1950907