UT4M Ultratour des 4 Massif

A major trail racing event offering 12 courses ranging from 20km to 180km through four mountain ranges: Vercors, Taillefer, Belledonne, and Chartreuse near Grenoble. UT4M180 Xtrem and UT4M180 Challenge cover all four massifs with 11,510m+ elevation gain.