Croix de Mathevière, Thurins Dam, Vallon du Garon in Thurins

Around the Vallon du Garon, between Yzeron and Thurins, a beautiful circular route allows you to alternate between forest trails and fruit orchards, while enjoying the Thurins Dam for a refreshing break (under the trees, as swimming is prohibited) or a picnic.

Technical sheet

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  • Walking
    Activity: Walking
  • ↔
    Distance: 10.99 km
  • ◔
    Average duration: 4h 20 
  • ▲
    Difficulty: Moderate

  • ⚐
    Return to departure point: Yes
  • ↗
    Vertical gain: + 425 m
  • ↘
    Vertical drop: - 429 m

  • ▲
    Highest point: 710 m
  • ▼
    Lowest point: 379 m

Photos

Description of the walk

Access by car: from Lyon, head towards Thurins. Drive through the village without heading towards the town centre, and stay on the D311 towards Saint-Martin-en-Haut. About 1.5 km after leaving Thurins, at a place called Le Rochet, take the small road on the right and keep left to follow the road towards La Mathivière. About 600 m further on, you will come to a flat area: this is the Croix de la Mathivière (or Croix des Barons), where there are a few parking spaces (be careful to leave room for agricultural vehicles during the season).

(S/E) From the Croix de la Mathivière (or Croix des Barons), take the road that descends (northbound), then turn left after 50 metres onto a good path that runs alongside fruit crops before entering the forest. The path climbs gently through oak and chestnut undergrowth.

(1) At the signpost: Bois de la Voune, take the left fork to continue climbing. The path alternates pleasantly between climbs and flat sections. Through the gaps in the trees, you can see the importance of fruit growing for the region, given the number and variety of plots.

(2) Once you have passed the Maison des Trêves, at the signpost: Les Trêves, take the small path that climbs to the left. After passing through a fir forest, you will find yourself among oak and chestnut trees as the climb becomes steeper. Ignore the paths branching off to the right and stay on the main track until you reach the signpost: La Goutte de Bellevue.

(3) At the signpost, continue to the right, descending very slightly to cross the bed of the Goutte, which spreads out a little over the path. Once you have crossed the ford, continue climbing along the edge between the forest on the right and the fields on the left until you reach a farmhouse in a place called Bellevue. Continue along the road opposite until you reach the crossroads, where you take the road on the right that descends to the hamlet of Le Biternay.

(4) At the houses, turn right onto the grassy path which descends gently at first, then more steeply as it re-enters the forest until it joins the road you left at Le Biternay. Turn right onto this road and descend for about 400 m until you reach the sign for the hamlet of La Mure.

(5) Then turn left onto the dead-end road that leads to an isolated house, then continue on the path that extends the road after the last gate on the right. Follow this path until you pass two red barriers.

(6) Shortly after the second red barrier, take the path on the left which climbs steeply and quickly reaches the edge of the dam (platform and information panels). The path then runs along the edge of the lake, offering beautiful views of the banks and the spillway. The surroundings are well laid out, with wooden pontoon walkways and half-trunks shaped like benches for relaxing breaks or experienced anglers. The path goes all the way around the dam and leads to other information panels and a visitor footbridge.

(7) Retrace your steps to a picnic area with a barbecue available at the edge of the lake. Turn right to take the path that climbs quite steeply and leads to the entrance of a beautiful house. Continue straight on this access road until the next hairpin bend.

(8) Turn right and begin a long descent down the side of the valley. Notice the stonework on the old walls and the vegetation, which is quite different from that on the way up (south-facing).

(9) At the signpost: Les Bruyères, continue downhill. Walk past a group of buildings and continue straight ahead at the next crossroads. When the path leaves the forest, it widens and turns into a road leading to the hamlet of Le Julin.

(10) Cross the hamlet and after the cross in the centre of the hamlet, keep to the right on the road then take the path that goes down to the right (after a house with an outside clock) when the road turns left. Stay on this path which descends steeply to the road at the bottom of the valley. Turn left, then take the first road on your right to cross the bridge over the Garon.

(11) From here, the final effort begins. The road climbs quite steeply after the bridge. Ignore the sign for Mathivière and continue straight ahead towards Les Champs. At the first left-hand bend, leave the road and take a path, still climbing steeply, which you follow straight ahead (the first fork on the right is private property). The path continues to climb steeply, turns right then left (ignore the private property again) and tackles the last few metres to reach the Palt du Mont road. Turn right onto this road, then enjoy the last 200 metres of flat ground, which are largely lined with brambles on the right, and you will find the Croix des Barons (S/E).

Waypoints

  1. S/E : km 0 - alt. 487 m - Croix de la Mathivière or - Croix des Barons (Thurins)
  2. 1 : km 0.62 - alt. 501 m - Bois de la Voune
  3. 2 : km 1.82 - alt. 569 m - Les paroisses
  4. 3 : km 2.88 - alt. 667 m - La Goutte de Bellevue
  5. 4 : km 4.1 - alt. 663 m - Le Biternay
  6. 5 : km 5.18 - alt. 555 m - La Mure
  7. 6 : km 5.59 - alt. 507 m - Red barrier
  8. 7 : km 6.16 - alt. 514 m - Thurins Dam - Garon (rivère)
  9. 8 : km 6.9 - alt. 623 m - La Cornelière
  10. 9 : km 8.26 - alt. 522 m - Les Bruyères
  11. 10 : km 9.55 - alt. 448 m - Le Julin
  12. 11 : km 10.14 - alt. 382 m - Garon Bridge
  13. S/E : km 10.98 - alt. 487 m - Croix de la Mathivière or - Croix des Barons (Thurins)

In the nearby area

(2) Just after the building at Les Trêves, the view stretches across the Garon Valley to the Rhône Valley, and probably much further if the weather is clear (but this was not the case on Sunday).

Between (4) and (5), you can begin to see the arch of the Thurins Dam from different angles.

(6) Shortly after the fork, the trail joins one side of the dam, where there is a platform with information panels.

(7) On the other side of the dam, additional information panels complete the story of this valley and its economic exploitation. A footbridge allows you to walk to the middle of the dam, next to the spillway, to enjoy new views of the lake and the valley.

(S/E) Take one last panoramic look at the orchards and hills to further appreciate your day's walk!

Reviews and comments

4.9 / 5
Based on 13 reviews

Reliability of the description
5 / 5
Clarity of route map
4.9 / 5
Route interest
4.9 / 5
Vince6977
Vince6977

Yes

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Vince6977
Vince6977

Overall rating : 5 / 5

Date of walk : Oct 11, 2025
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good
Busy trail : No

An excellent route which is actually closer to 12 km than the advertised 11 km. The elevation changes are sometimes severe due to a few steep slopes, but that's part of its charm. Well done to everyone involved in defining and marking out this route. Best regards.

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yvesdaru
yvesdaru

Overall rating : 5 / 5

Date of walk : Apr 05, 2025
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good
Busy trail : No

Use of GPS for route tracking.
Hike completed in bright sunshine. Very beautiful route with few tarmac roads.
I would like to thank the author of the hike because it was really very enjoyable

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Setie
Setie

Overall rating : 5 / 5

Date of walk : May 12, 2024
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good
Busy trail : No

The explanations are clear. A very beautiful hike, often under trees, sheltered from the heat.
You need to save your energy for the final climb.
Worth doing again.

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Gallegonen
Gallegonen

Overall rating : 4.7 / 5

Date of walk : May 08, 2024
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★☆ Good
Busy trail : Yes

An interesting route with some beautiful views, but lots of water on the paths at this time of year.
A small section is on the road, so watch out for vehicles.
A lovely, healthy walk

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herve.lequay
herve.lequay

Overall rating : 4.7 / 5

Date of walk : Apr 01, 2024
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★☆ Good
Busy trail : No

We visited this route in April, on a sunny weekday, after a very rainy March and weekend. The streams are full, often covering the paths, which nevertheless remain passable. The trees are still in bud, and there are beautiful views of the city of Lyon and the Alps in the distance. The landscapes are varied, peaceful and bucolic.
A quiet half-day hike with a nice little steep climb at the end.

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clarisvt69
clarisvt69

Overall rating : 5 / 5

Date of walk : Feb 10, 2024
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good
Busy trail : No

Completed in 2.5 hours at a pace of 4.5 km/h with a few short stops, a lovely route that makes you want to do it again when the weather is nice. Tracked with GPS, no issues. Thank you for the route

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LeonR
LeonR

Overall rating : 4.7 / 5

Date of walk : Dec 14, 2023
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★☆ Good
Route interest : ★★★★★ Very good
Busy trail : No

A very pleasant walk with excellent signage.
The route is also marked in yellow.

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Azur42
Azur42

Overall rating : 5 / 5

Date of walk : Oct 22, 2023
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good
Busy trail : No

Congratulations to the discoverer or inventor of this route, with just the right amount of climbs and, above all, a picnic spot that comes at just the right time...

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Pifau69
Pifau69

Overall rating : 5 / 5

Date of walk : Jun 23, 2023
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good
Busy trail : No

A very pleasant hike, even in hot weather, as it is mostly in the woods.
Personally, I preferred to leave the route between the hamlet of Bellevue and Le Biternay to avoid the tarmac section, which is not particularly interesting. At the hamlet of Bellevue, I took the path that branches off to the right at the start of the tarmac section, then after about 180 metres, I took the path that descends to the right and rejoins the original route a little further down. Be careful, as the descent is a little steep and can be slippery when wet.

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Trolliettes
Trolliettes

Overall rating : 5 / 5

Date of walk : Jul 02, 2022
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good
Busy trail : No

I was very impressed by the highly accurate route description. The directions are precise, well updated and the landmarks are useful.
This was my first time using Visorando, but it certainly won't be my last.

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jo71
jo71

Overall rating : 5 / 5

Date of walk : Apr 18, 2022
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good
Busy trail : No

A fantastic hike with two teenagers.
Very varied landscapes and very few paved roads.
Thank you for this route.

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baboutravel
baboutravel

Overall rating : 5 / 5

Date of walk : Feb 26, 2022
Reliability of the description : N/A
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good
Busy trail : No

thank you for this route, we loved it! Avoid rainy days or days after rain, as you follow several streams... Beautiful views, variety, the elevation gain is spread out over the walk (oh dear, that last climb
We'll definitely be doing it again!

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manuel.fonseca
manuel.fonseca

Overall rating : 5 / 5

Date of walk : Nov 15, 2021
Reliability of the description : ★★★★★ Very good
Clarity of route map : ★★★★★ Very good
Route interest : ★★★★★ Very good
Busy trail : No

A hike that takes you halfway to the Thurins Dam.
This dam, located in a wild setting, is the ideal place for a picnic break.
The landscape is harmonious, and in autumn the forests are adorned with sumptuous colours, a feast for the eyes.
A beautiful route, which is a little challenging in places. Be careful of the many fallen trees along the way.

Note that before arriving, a final effort of about 600 metres is required.
Thanks to the author

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