About
The Ultra Marin is a renowned ultra-trail event in France, offering multiple race formats and drawing thousands each year. Its main event, the 175 km Grand Raid, is a low-elevation loop around the Gulf of Morbihan, starting and ending in Vannes. The trail features a unique mid-race boat crossing and takes runners via rugged coves, historic tide mills, and vibrant Breton ports like Saint-Goustan. The course challenges athletes with its diverse terrains, including pine forests, bird-rich marshes, and ancient stone relics such as the Kernours megalithic site. This endurance test, running through day and night, immerses participants in breathtaking natural and cultural landscapes. The four-day affair peaks at the Vannes port esplanade, where finishers are met with cheers, regional pride, and a deep sense of achievement.
Races
53K
Jun 25, 2027 (Fri)
Distance
53 km
Elevation gain
196 m
Difficulty
Beginner
56K
Jun 26, 2027 (Sat) - 09:00
Distance
56 km
Terrain
Trail
Elevation gain
500 m
Difficulty
Beginner
70K
Jun 26, 2027 (Sat) - 23:00
Distance
70 km
Terrain
Trail
Elevation gain
500 m
Difficulty
Intermediate
100K
Jun 24, 2027 (Thu) - 12:00
Distance
100 km
Terrain
Trail
Elevation gain
800 m
Difficulty
Intermediate
175K
Jun 25, 2027 (Fri) - 19:00
Distance
175 km
Terrain
Trail
Elevation gain
1,430 m
Difficulty
Hard
175K
Jun 25, 2027 (Fri) - 19:45
Distance
175 km
Terrain
Trail
Format
Relay
Elevation gain
1,430 m
Difficulty
Hard
Weather history
Temperature
14°C / 22°C
Feels like
13°C / 22°C
Avg sunshine hours
11h 39m
Avg rainfall
3 mm
Avg snowfall
-
Max wind speed
21.2 km/h (Moderate breeze)
Sweat loss rate
High
Trail conditions
Dry and fast, firm underfoot



