Departure from Lagnieu, in the car park of the village hall, gymnasium and medical centre.
(S/E) Between the medical centre and the village hall, take the small wooden bridge over the stream, walk along the pond and then turn left between the fire station and the tennis courts. Cross the stream via another small wooden bridge, turn right after the bridge to join the D122 (Avenue Charles de Gaulle).
Follow it to the left, then take the first road on the right and go up Chemin des Roches (tarmac) for about 300 m, following the footpath that runs alongside this small road until you reach the start of the "greenway".
(1) 'Leave the greenway on your right'.
Turn left just opposite this greenway between a wide stony path (dead end) and a house. After about 20 metres, just before the path that climbs up to a property closed by a grey gate, turn left onto the narrow path that is barely visible in the grass. Follow this narrow path until you reach a wide path, which you take on the left.
At the end of this path, near a house, turn right onto the wide Chemin de Bramafan.
After about 100 metres, take the path that climbs up to the left.
(2) At the signpost for En Cuchet, turn right towards Bramafan and follow the blue and white signposts.
(3) At the signpost for Le Pressendre, go straight ahead and follow the blue and white circular signs. When you reach a fork in the road, at a large rock, take the path on the right.
(4) At the sign for Croix de Bramafan 10 min, leave the path and take the narrow path on the right that climbs into the woods
N.B.: you can avoid this steep, slippery climb in wet weather by continuing straight ahead and then taking the first path on the right, which also climbs up to the Croix de Bramafan.
You will arrive at the Belvédère de la Croix de Bramafan, with its tall white metal cross and orientation table at the top of a cliff overlooking the town of Lagnieu 400 m below, offering a wide panorama of the Rhône plain, the Ain plain, the Île Crémieu plateau and, on a very clear day, as far as Lyon.
(5) Continue along the path and turn right, following the blue circle with a white circle signpost on a pleasant, well-shaded forest path.
(6) Continue straight ahead on the path, which becomes a steep, very stony trail carved out between rocks. After crossing a meadow, you will arrive at the large Ferme du Bessey with its mullioned windows.
(7) Just after the farm, at the sign for Saint-Sorlin, turn right. This will take you onto the D60B road (Route de la Chartreuse).
(8) Cross it and take the path opposite. Continue right at the fork.
At the end of the road, follow the small Chemin de Tarot road on the left, which descends to the village of Saint-Sorlin.
Go past the church and continue downhill to a small square.
Turn right onto Rue de la Montée de l'Église, which descends and takes you to the village hall (and a very good organic bakery).
(9) Cross the Grande Rue, go past the school square and follow the Route du Port for about 100 metres.
(10) Turn right onto the Voie Verte just after Rue de la Vie Poulet.
Follow this dirt track until you reach the D122 (Route de la Chartreuse).
(11) Cross carefully and continue along the Voie Verte, which is now paved.
This will take you back to the Chemin des Roches, which you took at the start of the hike.
(1) Turn left in the opposite direction to the Chemin des Roches until you reach the D122 (Avenue Charles de Gaulle). Turn left and follow the road for 80 m, cross the pedestrian crossing and follow the Route de l'Allée Charles de la Verpillière until you reach the car park (S/E).