Les 21 km de Casteljaloux is a recent road race held in Casteljaloux, located in the Lot-et-Garonne department of southwestern France. Taking place in November, it features two race distances: 10 km and 21 km. Both races begin shortly after each other in the morning, at 9:00 and 9:15 AM. The municipality of Casteljaloux organizes the event, with assistance from local associations.
The race utilizes new courses for its third edition, featuring distinct mapped routes for the 10 km and 21 km events. A charity walk is also available for those wishing to participate in the morning's activities without competing. A unique aspect is the Challenge des élus, a competition within the main races for elected officials. This challenge has its own rankings for both distances and is open to mayors, deputies, municipal councillors, departmental councillors, and other officeholders from Lot-et-Garonne or other regions.