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