Ultra Tour des 4 Massifs (UT4M)
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Ultra Tour des 4 Massifs : walking summary
The event presents walking access to four Alpine massifs around Grenoble: Vercors, Taillefer, Belledonne and Chartreuse. Terrain varies from karst plateaus and vertical gorges in the Vercors to steep, rocky crests in the Taillefer and wooded slopes and alpine pastures in Belledonne and Chartreuse. Routes include valley paths, ridge walks and mountain trails that move between forests, alpages and high summits.
Practical points for walkers:
- The Parc de Chartreuse offers a maintained network of about 1300 km of marked trails.
- The Taillefer massif has marked mountain routes and a guarded refuge for mid-route rest.
- Lans en Vercors and nearby stations provide varied summer walking options and short guided walks, including donkey-supported morning walks.
- Trail and event organisers in Chartreuse mention staffed ravitaillements and arrival meals that favour local products.
The event programme lists a dedicated "Randonnée Ut4M" among its courses, indicating organised walking options within the UT4M framework. Surroundings combine mountain villages, ski-station services in summer, panoramic viewpoints and mountain infrastructure useful to walkers. Visit the organization's website for the most recent information.
