6 - 7
FATMAP difficulty grade
The first part of the Strada dell’Assietta winds up to Alpe Assietta.
After a short flat section, you leave the Strada at Col Blegier to ride down to Salbertrand through the Parco Naturale Gran Bosco.
Be prepared: 1,500m of down on a rough 4x4 trail with 40+ switchbacks are a hard test for the bikes and the bodies. Once in the Susa valley, take a break in the village of Exilles before the final part of the ride: the climb to the Colle delle Finestre (2,176m).
With 19km at an average of 9% and countless switchbacks, it is a bucket list climb - one of the toughest in the Alps which appeared 4 times in the Giro d’Italia.
In 2018, this is where Chris Froome launched a daring long range attack that would earn him the overall victory. It is also another great testing ground for gravel bikes as the top eight kilometers are unpaved.
After the summit, a short descent brings you back to your starting point.
It’s a big day: 74km including 40km of gravel, 2,440m of climbing, and over one hundred switchbacks. https://switchback.alpsinsight.com/