Saint-Gonlay (French pronunciation: [sɛ̃ ɡɔ̃lɛ]; Gallo: Saent-Gólei, Breton: Sant-Gonlei[3]) is a commune in the department of Ille-et-Vilaine in Brittany in the northwest of France.

It is surrounded by Montfort-sur-Meu, Bédée, La Nouaye, Breteil, Pleumeleuc, Talensac, Iffendic.

A priory has also been built and it depends on Saint-Jacques de Montfort abbey.

The path of schoolchildren The starting point is on the car park near the church and the town hall.

The hike lasts 2h15, follows the Meu river and offers many panoramas at different places on the circuit.