Name: Trail des Vallées
Start: 2026-03-29
End: 2026-03-29
Location: Saint-Pierre-de-Plesguen, Brittany

About the Event

Prepare for an epic trail running weekend in the heart of Brittany! The Trail des Vallées returns to Mesnil Roc'h on March 28-29, 2026, offering an incredible range of 8 timed races. From the grueling 115km Ultra Trail to the accessible 12km course, and even multi-race challenges like the Triple des Vallées (100km), there is a perfect distance for every runner. Located near Rennes and Saint-Malo, this major event combines breathtaking Breton landscapes with a warm, convivial atmosphere, making it a must-do for trail enthusiasts and families alike.

Races Offered

Trail XL 53 km

Mar 15, 2025

straighten

Distance — 53K

terrain

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42 days remaining

Trail XXL 115 km

Mar 15, 2025

straighten

Distance — 115K

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42 days remaining

Trail court 32 km

Mar 15, 2025

straighten

Distance — 32K

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42 days remaining

11 km

Mar 16, 2025

straighten

Distance — 11K

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42 days remaining

Course Nature 15 km

Mar 16, 2025

straighten

Distance — 15K

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42 days remaining

Marche Familliale 10 km

Mar 16, 2025

straighten

Distance — 10K

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42 days remaining

Trail court 25 km

Mar 16, 2025

straighten

Distance — 25K

terrain

Type — —

timer

42 days remaining

Weather Overview

These values represent the 3-year monthly averages for March in Saint-Pierre-de-Plesguen.

Temp (°C)

Feels Like (°C)

thermostat 5.8° / 13.0°

wb_sunny 1.8° / 8.8°

Wind (km/h)

Humidity (%)

air 15.4 /

water_drop 78.7%

Temp (°C)

Feels Like (°C)

Wind (km/h)

Humidity (%)

thermostat 5.8° / 13.0°

wb_sunny 1.8° / 8.8°

air 15.4 km/h

water_drop 78.7%

About Saint-Pierre-de-Plesguen

Saint-Pierre-de-Plesguen is a former commune in the Ille-et-Vilaine department in Brittany in northwestern France. On 1 January 2019, it was merged into the new commune Mesnil-Roc'h.