The Duathlon de Cozes is a run-bike-run race held in Cozes, organized by Le Footing Club de Cozes and Triathlon Saujonnais. The start is set each year in front of Marcelle-Nadaud elementary school, with racing beginning in the afternoon. It is an official FFTRI-affiliated event, open to licensed and non-licensed participants, and its 24th edition shows a local history beyond a one-off race.
The format is 4.7 km on foot, 35.8 km by bike, then another 4.7 km run, totaling 45.2 km. Participants can race solo or as a relay team, broadening the field beyond a standard individual-only duathlon. Timing and online registration are handled through espace-competition.com, and Étienne Charbeau hosts the event again.