Distance: 16.75 km
Trip ReportsVertical Climbed: 500 meters (1,641 feet)
Vertical Descended: 500 meters
Afternoon ride from home to tackled the famous Pierre Grosse singletrack. It consists of 33 very quick and short switchbacks but relatively easy. See map for other trails used.
Route Taken: Extension via Crolles
Weather: Hot (27C) and sunny, the trails are relatively shaded.
Country: France Area: Chartreuse Trailhead: St Ismier
