The 100 cols tour
The 100 cols tour is a 4000 km long cycling route through France and often called 'the toughest cycling tour in the world' (col is the French word for mountain pass). The route starts in the north, near Saverne. Then it runs, via as many hills and mountains as possible, to the Pyrenees. In the Pyrenees the route climbs many famous mountains before continuing, via the Mont Ventoux, through the French Alps. The end is again in Saverne.
The route is about 4070 km long and includes 66 000 altimeters. Although the route is called the 100 cols tour it actually contains 105 cols and 96 côtes, the latter being climbs that are not mountain passes.