Relais des 4 châteaux is a four-castle trail and walking event in Tourlaville, Manche, France, scheduled for April. The program offers four named routes: L’empereur, La princesse, La châtelaine, and La comtesse. Participants can select from an 8 km walk to a 20 km trail run.
L’empereur is the longest route at 20 km with 345 m elevation gain, while La comtesse is 14 km with 250 m gain. La princesse is a 16 km option, and La châtelaine is an 8 km walk. The castle theme is present throughout the event, from the title to the route names, providing the series with a local identity beyond standard distance options.