La Randonnée du Roulebois is a September cycling event held in Nogent-le-Roi; the specific date is to be confirmed. This ride is designed for bicycles, not for running. Participants can select from road routes of 60 km, 75 km, and 90 km, or a 65 km gravel option.
The longest road route covers 90 km with 600 m of elevation gain. The gravel route is 65 km with 400 m of elevation gain. The shorter road options allow riders to participate in a local randonnée without undertaking the longest distances. The entry fee is 8 EUR for all routes.