From the Château de Serrières to the Communaux de Trept : a journey back in time along the river

Pedestrian sports
Hiking itinerary

Image illustrative — © Fanny Bailly - Office de Tourisme des Balcons du Dauphiné

Place du village
38460 Trept

Difficulty: Modéré
Lenght: 13.7Km
Elevation: 185m
Duration: 3H50

GPX Trace

Route of the walk 59,15 Ko

Along the paths, most of which are shaded, you can see castles, chapels, mills and wash-houses, as well as ponds and areas of dry grassland at Les Communaux de Trept, an ENS site where more than 500 animal species have been recorded.

Route details

3h50

Boucle

13.7km

185m elevation gain

Difficulty

Walkers/hikers,
Level bue - Medium

Direction signs

Yellow paint markings

Ground type

Stone,
Ground,
Grit,
Not suitable for strollers

Map references

TOP 25 3132SB - BOURGOIN-JALLIEU
TOP 25 3131SB - MEYZIEU

Guidebook references

The "Walks & Hikes" guidebook for the Balcons du Dauphiné is on sale for €14.90 at the tourist information offices in Crémieu, Morestel, Les Avenières Veyrins-Thuellin, and Saint-Chef.

A walking guide entitled “From Serrières Castle to the Communaux de Trept: a journey through time along the water” (FFR – Balcons du Dauphiné collection) is on sale for €1 at the Tourist Information Offices in Crémieu, Morestel, Les Avenières-Veyrins-Thuellin and Saint-Chef.

1- At the starting post of the hike, go towards the church on the footpath, passing by the street "rue des Carriers".

2- At the post "Trept l'église", follow the direction Siccieu which goes round the church on the left by a small garden. After the gate, cross the D54 and take the opposite street. Continue until you reach the end of a cul-de-sac which you leave via a narrow passage. Then turn left. The road becomes a track, then a nature trail.

3- At the "La Sorbière" signpost, turn right towards Siccieu. The route joins a small road at a cross and an old bread oven. Turn left. The road, first dominated by the chapel Saint-Didier-de-Cozance located on a height, then skirts the pond of Fenières and continues by a wide track up to the post"Etang de Fenières".

4- Turn left, still towards Siccieu, past the"Etang Bouvet" post. At the "La Grande Taverne" sign, turn left onto a wide track towards "Dizimieu". At a large agricultural shed, turn right to reach the "Terre Villain" sign.

5- Head towards Trept. After 500 m on a wide track, the route turns slightly right onto a narrower track as far as the "La Gagne" sign.

6- Go straight ahead after crossing the road, direction Vénérieu, pass near the ‘Pelouses sèches’ landscaped area.

7- Turn left towards Trept. Cross the Espace Naturel Sensible des Communaux de Trept before going down to the D 517 at the "Bange" signpost.

8- Cross the road and take the street opposite as far as the Lavoir du Truffet. At the nearby crossroads, turn right. The route crosses the voie verte and continues around the village to a crossroads dominated by a cross. Turn left and follow the road up towards Trept church.