The GR 40 is a 175 km looped trail that starts and ends in Vorey, France. The trail is considered to be medium to hike and has a total elevation gain of 4116m. Normally the trail takes 1 days to complete but can be finished in as little as 1 day.
The warmest months are June, July, and August and the coldest months are December, January, and February. The wettest months are June, July, and August and the driest months are September, October, and November.