Refine your search for walks in Col des Porthets (2072m)
Lac du Mont Charvin via Col des Porthets

A moderately difficult hike through the steep, rocky mountain pastures of Mont Charvin. From the Fontanettes car park in the commune of Le Bouchet, the climb takes you past the Chalet des Fontanettes and the Chalet de l'Aulp de Marlens, then through the valley to the Col des Porthets. From there, descend to join the path coming from Manigod and climb back up to the lake. The return journey follows the same route.
Walks near Col des Porthets (2072m)
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.
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.
Lac Tournant

This is a circular walk based on trail 5 as promoted by the Arêches tourist board. It is well marked with yellow signs and paint flashes or markers for trail 5. There are good views over to Mont Blanc, the Beaufortain Mountains and the lake, although small, is a nice place to eat your sandwiches.