Roaming à Saint-Geoire-en-Valdaine Col des Mille MartyrsThe Col des Mille Martyrs, north of the Chartreuse, offers a beautiful view of the massif and easy ascent.Share on …The route taken is quiet and ideal for cyclists.Step-by-step guideFrom Saint-Geoire-en-Valdaine, near the cemetery, take the D28 to the Col de la Croix des Mille Martyrs.Cycling sportsCycle routeDifficultyModerateDuration01:15pmElevation3 D- / 474 D+Distance8,0 kmMax Altitude883 mTo download GPXKML Hard coating (tar, cement, floor) White and green signs entitled “Col des 1000 Martyrs”.