The Duathlon des Collines Bleues is a run-bike-run race for young athletes in Port-Launay, Finistère, Brittany, organized by Team Triathlon Châteaulin. It is designed for boys and girls in French youth categories, featuring separate XS and S races for each gender, alongside children's races. This event typically occupies a full day of competition in March.
Approximately 300 young participants are anticipated, positioning it as a regional development and championship event rather than a general adult duathlon. The race distances vary from a 0.25 km option for children to 2.5 km and 5 km races, with minimal elevation gain of 1 to 20 meters. Importantly, the event functions as a quarter-final qualifier for the French Youth Championship and includes Breton and Finistère championship races for Benjamin, Minime, Cadet, and Junior age groups.