FATMAP difficulty grade
A morning train ride to Montroc near Le Tour leads to a steep run to tree line, culminating at the gorgeous summit of Aiguillette des Posettes.
Highlights include relatively quiet trails and extensive panoramic views of the entire Chamonix valley and over to Switzerland.
There's room to vary the route too, with an optional chairlift and gondola to shorten the descent, or you can easily extend the run with a flowing descent back to Chamonix from Le Tour, on trails through woods and villages. Check out Run the Alps trip options here: https://runthealps.com