In the current article, the already existing process of "hackathons" was used to teach management or organisational consulting. Two separate events were conducted with dozens of students working in teams for twelve straight hours to solve real organisational challenges. Results from post-event surveys indicate that participants - students, faculty, industry mentors and company representatives -- were highly satisfied with these intense experiential learning events, both due to their educational value and the contribution of the solutions for the organisations if further developed.