The Bol d'Air in Saint-Avertin is a nature-running weekend held in January at the Domaine de Cangé, near the Château de Cangé in Saint-Avertin. SAS Triathlon organizes this event, attracting several hundred participants and providing options based on age, fitness level, and desired distance.
The schedule features a 9 km night trail encircling the château, requiring a headlamp. Additional running distances include 7 km, 13 km, and 22 km. The shorter routes involve some elevation gain, with approximately 110 m of ascent on the 7 km and 210 m on the 13 km. The broader Bol d'Air program also incorporates a Bike and Run event.