Challenge Casimir Trawinski is a small road race in Templeuve-en-Pévèle, in the Nord department of Hauts-de-France. It is scheduled for early October and links its running day to Octobre Rose, the French Pink October campaign for breast cancer awareness and health promotion. The format is straightforward: runners select between 2 km and 5 km routes, with the shorter loop intended for beginners, children, and families, and the 5 km option offering more regular runners a moderate challenge.
The race features looped circuits, allowing participants to complete as many laps as they wish rather than being committed to a single fixed finish distance. Past editions opened the course from early morning until the afternoon, enabling runners to start at their convenience before the final cutoff. The event also incorporates activities for spectators and participants, with the stated goal of promoting health, well-being, and outdoor social interaction centered around the Octobre Rose cause.