The linear route "par la Corniche" allows you to divide the route. Instead of the 104 km of the GR® de Pays Tour du Mont des Avaloirs, there are two loops to choose from: after 24 km and the finish at Ton d'Orthe, head towards Villaines-la-Juhel for an 80 km loop (76% overland) or head east towards St-Léonard-des-Bois for a 70 km loop (60% overland).
Click here to buy the Tour du Mont des Avaloirs guidebook
Published by the Comité départemental de la Randonnée pédestre de la Mayenne, it describes the 104km route in stages.