La Marath'Yonnaise

About the Event

Discover the scenic heart of the Vendée at La Marath'Yonnaise on Sunday, May 31, 2026, starting from the Maison de quartier de la Vallée Verte in La Roche-sur-Yon. This beloved local trail running festival offers an accessible challenge for every athlete, with distances ranging from a brisk 6km to the full 42km marathon route, complete with a popular team relay option. You'll run on beautiful nature trails that wind through the lush Yon valley, passing landmarks like the Moulin Crépet and heading towards the Moulin de Rambourg. The event is renowned for its fantastic community spirit, organized by the passionate local club Marath'Yon 85, which ensures a friendly, well-supported atmosphere perfect for both seasoned trail runners and enthusiastic beginners. Your race will be fully chip-timed on marked courses, with refreshment stations and a vibrant finish-line celebration awaiting every participant. By taking part, you're joining a two-decade-long tradition that celebrates the natural beauty and sporting culture of the Vendée region in western France. Whether you're chasing a personal best on the marathon loops or enjoying a scenic 12km with friends, this event promises a memorable day of running. Mark your calendar for a true celebration of trail running in one of France's most charming departments.

Races Offered

42 km

May 31, 2026

straighten

Distance — 42K

terrain

Type — —

timer

08:00

24 km

May 31, 2026

straighten

Distance — 24K

terrain

Type — —

timer

08:45

12 km

May 31, 2026

straighten

Distance — 12K

terrain

Type — —

timer

09:30

Weather History

These values represent the 3-year monthly averages for May in La Roche-sur-Yon.

thermostat Temperature

10.9° / 19.1°

wb_sunny Feels like

8.3° / 16.4°

light_mode Avg sunshine hours

10h 51m

water_drop Avg rainfall

2.3 mm

ac_unit Avg snowfall

—

air Avg wind speed

13.6 km/h (Gentle breeze)

opacity Sweat loss rate

Moderate

terrain Course conditions

Firm and slightly soft

sunny Max UV Index

Moderate (4.2)

humidity_mid Humidity

74.9%

wb_twilight Sunrise

06:30

nightlight Sunset

21:33

About La Roche-sur-Yon

Learn more about the host city, La Roche-sur-Yon.

La Roche-sur-Yon is a commune in the Vendée department in the Pays de la Loire region in western France. It is the capital of the department. The demonym for its inhabitants is Yonnais.