Odysséa Nantes begins at Cours Saint-Pierre, sending a pink crowd through the center of Nantes for a breast cancer charity run and walk. The local event includes a timed 10 km run, a 5 km walk or run, and a children’s event named “Je cours pour maman.” It takes place in March, with the objective to move with others while raising funds for breast cancer research and support, emphasizing solidarity over times or podium finishes.
The route passes historic monuments and central streets before returning to the Odysséa village. There, stands collect donations, and the finish area provides music, entertainment, and a group warm-up. Regular runners, beginners, walkers, families, and children are welcome. Individuals not present in Nantes can participate remotely with a digital bib. Odysséa was founded in France by international athlete Frédérique Quentin and physiotherapist Frédérique Jules. Its races have supported organizations like Institut Gustave-Roussy, Institut Curie, Europa Donna, and Vivre comme avant, funding research projects and practical aid for women undergoing treatment.