The GR 137 is a 51 km trail that starts in Autun, France and ends in Dragny, France. The trail is considered to be medium to hike and has a total elevation gain of 919m. 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 March, April, and May and the driest months are June, July, and August.