Refine your search for walks in Pont Romain (Les Clefs)
Route via Ugine, Hery, Flumet and the Col des Aravis from Thônes
This route passes through the Col du Marais, joins the cycle path that takes you to Ugine, where the climb to Hery and Flumet begins. Then, the Route des Gorges de l'Arrondine leads to La Giettaz, the start of the tough climb up the Col des Aravis. All that remains then is the descent, which passes successively through La Clusaz and Saint-Jean-de-Sixt before reaching Thônes.
Walks near Pont Romain (Les Clefs)
Aiguille des Calvaires and Combe de Borderan
A great pointy summit with a cross on top and good views followed by a descent of Borderan Combe. This could easily be done in reverse and/or without the use of the cable cars.
Parmelan loop from Dingy via the Col du Perthuis
Le Parmelan, via a slightly less traditional route.
At the summit, sharp limestone pavement, Grotte de l'Enfer (and other caves), Mont Blanc range.
From the Baraque de l'Abbaye to the Chalet de l'Alpettaz

This hike takes you to the heart of the Faverges-Seythenex valley, following the Lac d'Annecy with the Torrent de Saint-Ruph, which is the lake's main source of water, ending with a view of Albertville and Mont Blanc at the Col de l'Alpettaz (alt. 1,580 m).
Gouille des Fours - Col des Annes via Lac de Tardevant
From Gouille des Fours, head towards Lac de Tardevant via the Grande Forclaz and Ambrevetta passes, then return via alpine pastures and forests to La Pointe and Col des Annes.
Col des Annes - Gouille des Fours via the Col des Verts
Depart from the Col des Annes, pass by the Refuge de la Pointe Percée, then by the Col des Verts. Camp at the Gouille des Fours, where ibex have made their home, with a magnificent view of Mont Blanc.