Col des Glières, Mountain pass and cycling route in Haute-Savoie, France
Col des Glières is a mountain pass in the French Alps accessible by a road of about 24 kilometers that reaches 1,440 meters elevation. The route winds through twelve hairpin turns and includes a gravel section on the eastern side.
The location became the site of a decisive battle in March 1944 between French Resistance fighters and Nazi forces during World War II. This event shaped the area's local history and led to the establishment of a memorial monument.
The Monument National de la Résistance stands at the summit to commemorate the wartime events, drawing visitors who seek to understand French wartime history.
Gradients reach up to 15 percent and demand physical preparation, especially given the varying road conditions and high elevation. Visitors should expect longer travel times and be aware of changeable weather that is common at this altitude.
The location was incorporated into the Tour de France route in 2018 and is now considered one of the most demanding climbs in modern professional cycling. This recognition has made it a sought-after destination for cyclists worldwide.
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