The itinerary lasts 3hrs 30min, and has 2 steps.

Marseille - Veynes
The step from Marseille to Veynes lasts 2hrs 45min. You'll travel in a regional train.

Veynes - Le Dévoluy
The step from Veynes to Le Dévoluy lasts 00hrs 45min. You'll travel in a day bus.