"Oxygene 74 is a hiking association which holds hikes at different levels every Sunday throughout the year, with snowshoes in winter. Often there are also hikes on Wednesday and Thursday. The hikes are for fit hikers, and last for five to nine hours. You need to register beforehand, details on forthcoming hikes are on the Website https://www.randonneeoxygene74.com/, some hikes are also posted on glocals. There is a small registration fee. ."