Duathlon Chaumont is a run-bike-run event held at Lycée Agricole Edgar Pisani on Rue du Lycée in Chamarandes-Choignes, near Chaumont in France's Grand Est region. The program typically occupies a Sunday, featuring adult S and XS formats, two children's races for ages 6-9 and 10-13, and a French D3 Championship semi-final race for the North-East zone. E.C.A. Chaumont Triathlon Duathlon, also known as ECAC, organizes the event, which caters to local participants and athletes seeking federation qualification.
The race returned to La Vendue after a one-year absence, with the bike course redesigned for better racing and spectator viewing. The run course was also modified based on feedback from the prior edition, indicating adjustments focused on racer experience. Chaumont is one of five D3 semi-final locations for the French duathlon championships, with the D3 race awarding spots in the national final. This event also functions as a France Jeunes qualifier, attracting young athletes, club teams, and competitive age-group racers to a shared schedule.