The 10 Km de Ducey is a 10 km road race held in Ducey-les-Chéris, a town in the Manche department of Normandy, France. Taking place in early November, it features a certified course suitable for qualifying for the French championships. This race also functions as the Normandy 10 km Championship for licensed FFA runners, though participation extends beyond licensed athletes, welcoming runners from cadet age groups through veterans.
The route consists of three loops: one short loop followed by two larger ones. It is not a flat out-and-back; runners encounter gentle uphill and downhill false flats, requiring careful pacing over the 10 km distance. Now in its 13th edition, the event attracts a strong regional field, with 769 classified finishers recorded recently. Bib pickup is located at the multipurpose hall, with amenities including parking, changing rooms, showers, food service, and an awards ceremony.