Odysséa Paris 2026: a race against breast cancer around the Château de Vincennes

In October 2026, sport and charity go hand in hand as participants join a race in support of the fight against breast cancer, during Breast Cancer Awareness Month! For its 25th edition, Odysséa, the race against breast cancer, invites us to meet on Saturday, October 3 and Sunday, October 4, 2026 at the Château de Vincennes. For more than 20 years, Odysséa has raised millions of euros for the Gustave Roussy cancer research institute, the leading European center in the fight against cancer.

While progress is being made in breast cancer research, there is still a long way to go… Each year, 59,000 more women are diagnosed with the disease. Although breast cancer is among the most well‑treated cancers in France, ongoing prevention and awareness efforts remain essential.

• To be read
• This week's top picks in Paris and Île-de-France, June 22–28, 2026
• The ultimate guide to running and road races in Paris and Île-de-France for 2026

On Saturday, you can join a solidarity Zumba session (15€), a 1km event for kids “I Run for Mom” (12€), a 5km duo run (35€), or a solidarity walk (20€). As for Sunday, the main 10-kilometre race awaits (35€) or the 5km run or walk (30€). It’s also possible to participate without running by purchasing a T-shirt or through connected races.

There will also be activities at the Odysséa Village. In 2025, nearly 383,506 kilometres were logged, helping raise just over €1 million for breast cancer.