Although rarely attempted, the Hikers Haute Route is open to mountain biking but you should expect to hike-a-bike several scree fields. The Hikers Haute Route is network of trails winding around the highest peaks of the Alps that crosses eleven mountain passes from Chamonix to Zermatt. At a minimum, you can expect to take at least 5 days to complete the 20,000 feet of vertical, but you may want to budget 7 days on a more leisurely pace. Along the way, the singletrack and fireroads rolls through alpine tundra and valley forests passing plenty of 14,000 peaks.
On the 5 day tour, start in Chamonix and stay the night in the following valley towns: Champex, Veysonnaz, Grimentz, Gruben and Zermatt.
Since the route is not signed as the Haute Route, you will need several maps showning the local trail names and towns along the route. In typical European fashion, you will be following a breadcrumb route of signs pointing from town to town. Along the way, there are a few trams and gondolas that permit bikes and help to reduce the amount of climbing vertical. If you decide to skip Cabane Mont Fort, make sure you pass through the scenic villages of Eusigne, Evolene and Ayer.
Since the remote towns along the route may not have the bike supplies you may need, make sure to bring your own spare tubes, tires and brake pads.
This route is not to be confused with the winter skiing route called the Haute Route glacier trek (aka High Route or Mountaineers Route) which is at high altitude and passes only alpine huts.
Note: Most of the maps of this route are compiled using the Swiss Grid with the CH-1903 map datum. Make sure to set your GPS unit accordingly.
Overall, Haute Route is the 100th most popular mountain bike trail of all 104 mountain biking rides in France.