Mont Bel-Air, Mountain summit in Trébry, Côtes-d'Armor, France.

Mont Bel-Air is a mountain in Brittany that reaches 339 meters high and represents the highest point in the department. The landscape around the summit includes forested slopes and open areas with views across the surrounding countryside.

Mont Bel-Air is the highest point of Côtes-d'Armor, rising to 339 metres in the Monts du Mené, part of the Armorican Massif. Its gentle slopes also reach the communes of Trédaniel and Plessala. At the summit stands the Notre-Dame du Mont-Carmel chapel, built between 1855 and 1862. In 2015 the mountain featured at kilometre 90 of the 185 km eighth stage of the Tour de France from Rennes to Mûr-de-Bretagne, where Romain Sicard crossed the summit first.

The summit chapel is Notre-Dame du Mont-Carmel, also called Notre-Dame de Bel-Air, built between 1855 and 1862. The mountain's Breton name, Ménez-Bélair, appears alongside the French form. The summit sign photographed there reads "Col du Mont Bel-Air, Alt. 336m, Commune de Trébry", marking the spot for walkers.

The path to the summit requires sturdy shoes and some physical stamina, as the route covers several kilometers. The best time to visit is in dry weather when the trails are in good condition.

The summit sign reads "Col du Mont Bel-Air, Alt. 336m, Commune de Trébry", while the sources give 339 m for the mountain; the sign stands on a green post at the edge of a grassy slope, beside a bare-branched tree and a pale building with a stone-trimmed pointed tower.