The Bazas-Langon is a road half marathon held in Gironde, southwest France, taking place in early March. It runs from one town to another, rather than on a loop. The primary race spans just over 21 km, commencing in Bazas near its cathedral and concluding in Langon. This event has a history of over 35 years and typically attracts more than 1,000 participants, establishing its place in the local running schedule without being exclusively for elite athletes.
The half marathon route crosses varied terrain, including descents, climbs, countryside, and riverfront sections, passing the quays of the Garonne before the finish in Langon. The event also offers shorter races and a walk for runners and walkers: a 12 km Coimères-Langon race, a Cazats-Langon hike (unclassified), a 2 km youth race, and a 1 km children's race. The program accommodates licensed and non-licensed runners, disabled athletes, juniors, masters, walkers, and children.