Circular route around Sainte-Croix-en-Jarez starting from the Couzon dam.

A very pleasant route starting from the Couzon dam, a little steep in places, alternating between nature and history. Once you reach Sainte-Croix-en-Jarez, it continues with a circular route passing by the Croix de Marlin. The paths are sometimes very stony, so this is not a family-friendly route.

Details

2620025
Creation:
Last update:
Last review:
  • Walking
    Activity: Walking
  • ↔
    Distance: 17.99 km
  • ◔
    Average duration: 6h 35 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 515 m
  • ↘
    Descent: - 517 m

  • ▲
    Highest point: 654 m
  • ▼
    Lowest point: 347 m

Photos

Description of the walk

Park on the Couzon dam. Please note: at weekends, parking spaces fill up quickly, so it is best to set off in the morning.

(S/E) Head to the left bank and immediately take the path that runs along the riverbank. You will reach the small Couzon dam.

(1) Continue straight ahead. Follow the Couzon. At the intersection, take the left-hand climb to the hamlet of Seyoux. At the top of the hill, join the tarmac road.

(2) Turn left. Leave the three-way junction behind you, continue straight ahead and descend to the bottom of the valley.

(3) Cross the bridge over the Grand Valluy stream and take the path immediately to the left.
As you climb, keep to the right on the stony path. At the intersection, turn right into the woods, then continue straight ahead until you reach the tarmac road.
When you reach the tarmac, follow it to the wooden cross.

(4) Continue left along the road. Arrive at Sainte-Croix-en-Jarez.
Leave the car park on your left and turn left at the intersection. Continue to the junction with Route de Conty.

(5) Continue straight ahead along Rue des Portes, walk along the front of the Chartreuse and turn immediately left. Walk along the front again until you reach the cemetery.

(6) Cross a small footbridge, go around the cemetery by turning right, pass in front of its entrance and join the Route de Jurieux which goes uphill (the road on the right at the three-way junction). Continue straight ahead until you reach the hamlet of Thesay.

(7) At the first intersection, turn right in front of the houses onto the stony dirt track, pass the intersection again straight ahead in front of the cross and join the tarmac road. Continue straight ahead until the first intersection on the left.

(8) Turn left onto the steep tarmac hill until you reach the antenna at the top.

(9) Pass the Virgin Mary statue and immediately turn right, cutting across the fields straight ahead. Follow the hedges on the left as they descend towards the woods. Descend into the woods (watch out for brambles) until you reach the path (caution: barbed wire fences). Take it on the right, climbing up to the next intersection.

(10) Take the path on the left that climbs towards Les Roches de Marlin.

(11) At the top, turn right and continue straight ahead on the main path until the next intersection.

(12) Turn right, passing through the hamlet of Marlin. Please note: at the next three-way junction, take the road on the left that descends and keep left, continuing straight ahead to the bottom of the valley. Join the main road at the Croix du Trève crossroads.

(13) Take the dirt track that descends to the right. Join the Ruisseau de Boissieux.

(14) Cross it and continue on to the hamlet of La Conty. Go straight into the hamlet and take the road. You will come to a three-way junction.

(15) Keep right on Rue de Conty, which leads to the crossroads of the circular route you passed earlier.

(5) Follow the same route as on the way out to return to the Couzon dam car park (S/E).

Waypoints

  1. S/E : km 0 - alt. 353 m - Couzon dam car park
  2. 1 : km 1.63 - alt. 355 m - Small dam
  3. 2 : km 2.49 - alt. 426 m - Hamlet of Seyoux
  4. 3 : km 2.94 - alt. 383 m - Bridge at the bottom of the valley
  5. 4 : km 3.62 - alt. 422 m - Route de Seyoux - Croix
  6. 5 : km 5.25 - alt. 420 m - Crossroads of the circular loop - Chartreuse de Sainte-Croix-en-Jarez
  7. 6 : km 5.5 - alt. 410 m - Footbridge
  8. 7 : km 6.28 - alt. 467 m - Thesay climb
  9. 8 : km 6.87 - alt. 538 m - Climb towards the antenna.
  10. 9 : km 7.18 - alt. 592 m - Antenna
  11. 10 : km 8.07 - alt. 587 m - Roches de Marlin climb
  12. 11 : km 8.57 - alt. 654 m - Roches Marlin
  13. 12 : km 9.47 - alt. 609 m - Marlin
  14. 13 : km 10.33 - alt. 526 m - Croix du Trève
  15. 14 : km 11.1 - alt. 467 m - Boissieux stream
  16. 15 : km 11.92 - alt. 485 m - Three-way junction at Route de la Challe
  17. S/E : km 17.99 - alt. 353 m - Couzon dam car park

Notes

No special equipment required, except perhaps a pair of walking sticks for the few slightly steep climbs.

Worth a visit

(S/E) The Couzon dam is one of the oldest in the country still in operation (construction began during the Revolution).

(5) Saint-Croix-en-Jarez: a village unique in France because it occupies the former Carthusian monastery. Guided tours last about an hour.

(7) The chapel of Jurieu: near Sainte-Croix, a tiny, beautifully preserved thousand-year-old chapel. Ask for the keys in the neighbouring houses to visit (free of charge).

(11) Weather permitting: near the Roches de Marlin, on the route, views of the Alps, Mont Blanc, and the Chartreuse and Vercors mountain ranges.

Reviews and comments

4.4 / 5
Based on 8 reviews

Reliability of the description
4.1 / 5
Ease of following the route
4.6 / 5
Route interest
4.4 / 5
Laurent.saccomani0344
Laurent.saccomani0344

Overall rating : 4 / 5

Date of your route : May 11, 2026
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

At point 7, do not follow the Visorando route but continue straight on to the Jurieu chapel, then follow the signs for the Marlin rocks and rejoin the Visorando route at point 11.
By suggesting routes that involve “heading straight across open fields and jumping over fences”, it is hardly surprising that landowners refuse to allow walkers onto their land. Hikers MUST ALSO respect fields, pastures and fences, especially as, in this case, the route via the Jurieu Chapel and the Vienne path is just as interesting and much more pleasant.
Visorando should not publish routes with instructions such as “jump over fences”. After 50 people have gone over it, what state will the fence be in? 😡

Machine-translated

joma01
joma01

Overall rating : 4.3 / 5

Date of your route : Jan 07, 2026
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

Route completed in cold weather (frozen lake shore!).
A beautiful route with no major difficulties, tracked on the app.
The only criticism is the return trip on the road between Seyoux and Sainte-Croix-en-Chartreuse.
I suggest taking the paths via "Benne" and the southern cross for the first part.

Machine-translated

coureur42
coureur42

Overall rating : 4.7 / 5

Date of your route : Jan 11, 2026
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

Very beautiful hike, passing by Mont Monnet, great view.

Machine-translated

User 3321506

Overall rating : 4.3 / 5

Date of your route : Oct 18, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

What a lovely discovery this pretty village of Saint Croix en Jarez was, which we took the time to visit, with beautiful autumn colours around the Couzon dam! We took a slight detour on the way back just after returning to the village of Saint Croix and followed another trail (marked with pink dots on the IGN map) which brought us back to the route.
Many thanks to the author of this route!

Machine-translated

LaurentDehors
LaurentDehors

Overall rating : 4.7 / 5

Date of your route : Mar 31, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Beautiful landscapes at the start of this sunny spring.
I started the route at 2 p.m. and returned at 11:30 a.m. the next day, camping between points 11 and 12 at the foot of the Marlin cross (a windy spot, but I love the views, and this one is superb. With a sunset that paints Mont Blanc pink, weather permitting). In this case, you can refill your water bottles in the public toilets in Sainte-Croix-en-Jarez.
To avoid the mess of hedges and barbed wire at point 9, I continued on to Jurieu to the chapel and then reached point 11 via a path from the Vienne road.
I also preferred to take the other side of the lake on the way back, where the path is a little wilder. These changes only added 100 metres to the route...
Many thanks to the author, a very beautiful route in good weather!

Machine-translated

flopicano
flopicano

Overall rating : 4.3 / 5

Date of your route : May 14, 2022
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

Nice route. However, it must be very hot in summer.
For the return trip, it's better to go around the other side of the dam, as the trail is more varied there.

Machine-translated

pierrefror
pierrefror

Overall rating : 4.3 / 5

Date of your route : Jun 27, 2021
Reliability of the description : ★★★☆☆ Average
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

The first half of the route is superb.

Machine-translated

fmontagu
fmontagu

Overall rating : 4.3 / 5

Date of your route : Feb 20, 2021
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

A very pleasant route with beautiful scenery/panoramas and a touch of culture.
Between points 9 and 10, if, as indicated in the description, you follow the hedges down towards the woods, you will find yourself blocked by fences. However, the hedges have disappeared. You can therefore cut straight across the field to reach point 10.
Our mobile phones indicated a greater elevation gain than that indicated in the description.

Machine-translated

Other walks in the area

For more walks, use our search engine .

The GPS track and description are the property of this route's author. Please do not copy them without permission.