Les Pieds dans l'Buru is a late-February trail event in La Cropte, featuring short off-road formats instead of a single standard race. The program offers a timed 11 km trail race, a Nordic walking or hiking option, and the Ultime Time Master. The latter is a repeated-loop challenge supporting the association Graines d'enfants and its work promoting egg donation.
The Ultime Time Master distinguishes the event: runners begin with a loop of approximately 6.5 to 7 km, needing to complete the first lap within one hour. A new start is given each hour, with the time limit decreasing each round. The race continues until only one runner remains. The loop is also open at each start for those seeking a shorter effort, with rankings based on the best lap time. If the contest extends, the final lap might require headlamps.