Route of the Gier Aqueduct from Chaponost

I will take you on a route between Chaponost and Brignais to see some ancient remains of the Gier Aqueduct, built almost 2,000 years ago.
The main difficulty of the route is its relative length.

Details

10892728
Creation:
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  • Walking
    Activity: Walking
  • ↔
    Distance: 16.69 km
  • ◔
    Average duration: 5h 35 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 276 m
  • ↘
    Descent: - 279 m

  • ▲
    Highest point: 332 m
  • ▼
    Lowest point: 212 m

Photos

Description of the walk

The starting point is located at Place du 8 Mai 1945 in the centre of Chaponost
To get there:
- by car: take the RD342 road, then head towards Chaponost centre (car park available)
- by public transport:
- by bus: TCL lines 11 or 12 from Oullins station (metro line B)
- by train + bus: SNCF tram-train line from Brignais + TCL lines 11 or 12 (or on foot from Chaponost station: allow for a 2 km walk).

(S/E) Head towards the clearly visible Saint-Prix Church (Avenue du Maréchal Joffre).

(1) At the roundabout near the town hall, turn left onto Rue Louis Martel and continue to the end of the street, about 700 metres away. Along the way, you will see some yellow markings.

(2) On the right, you will see the Guichardet wall, part of the Gier Aqueduct, which you can explore. Continue left on Chemin de Combarembert towards Soucieu-en-Jarrest.

(3) Cross the road carefully and continue straight ahead on theGR® 765-East. You will pass by some equestrian facilities.
At Combarembert, continue straight ahead, following the red and white markings.

(4) About 100 m after Les Esses, turn right onto the wide gravel path leading downhill, then cross the Garon river via a footbridge. Then head right, following the red and white markings.

(5) Turn right towards Soucieu-en-Jarrest on the small road. Pass Barel on your left and continue along the path. After a short climb, the path levels out. Continue along a small road.

(6) At thesecond fork in Furon, take the path on the left towards Le Combard, following the yellow markings. You will cross the Furon stream during a descent followed by an ascent.

(7) At a fork, continue left on the small road, then turn right onto the path which then joins a junction of paths and go left.

(8) After a right-left turn, you will reach the archaeological site of La Gerle. Please note: this is private property, but access is tolerated. Here you will find a section of aqueduct with its arches filled in, then a siphon bridge reservoir.
Retrace your steps to the junction you came to earlier, then continue straight ahead

(9). Not far away, you will come to another archaeological site with a section of aqueduct. The camel-shaped arch explains the name of the place.
Continue straight ahead to the place known as Grand Champ.

(10) Turn right at the road, take care, then quickly continue left onto another road, the RD25. You will see a wall and a few arches that supported the aqueduct.
Retrace your steps to Grand Champs and continue straight ahead on the road for a short while.
Caution: take great care when passing vehicles on this section of road, as there are no pedestrian facilities. Head towards the town of Brignais.

(11) At thefirst crossroads on the left, turn left onto Chemin du Champ du Mont, then continue towards Les Aqueducs. At all junctions, go straight ahead, following the yellow markings, and then take a path down to the River Garon.

(12) Further on, you will reach a path: turn left and follow it to the ancient ruins of the Pont Siphon du Garon in the southern sector.
Retrace your steps and continue straight ahead at the fork you encountered earlier. After passing an inn at a place called Les Aqueducs, cross the bridge and, not far away, follow a path on the left.

(13) You will reach the northern section of the Pont Siphon du Garon. Retrace your steps to the bridge you came across earlier, at a place called Les Aqueducs, and cross it. Take a path running alongside the river towards Le Gué.

(14) Take the footbridge across the stream, then shortly afterwards turn right onto Chemin de Barray.

(15) At thefirst fork, keep left on Chemin des Lapins. After a climb on a good path, you will reach a small road at a place called La Boirie. Continue straight on towards Croix Ramier.

(16) Continue straight ahead towards Les Cartières. At the end of the road, continue left towards Chaponost. Cross a roundabout, then continue straight ahead on Boulevard Pierre Philippe Reydellet.

(17) Take thefirstpath on the right and turn left at Gilbertin towards Chaponost - Tourist Office. The path winds through a pretty park and runs alongside a small lake where you may spot a few nutria.
Return to the starting point by following the signs, passing to the left of the media library at the park exit, and arriving at Place du 8 Mai 1945 (S/E).

Waypoints

  1. S/E : km 0 - alt. 298 m - Chaponost - Place du 8 Mai 1945
  2. 1 : km 0.27 - alt. 309 m - Roundabout
  3. 2 : km 0.99 - alt. 312 m - Le Guichardet
  4. 3 : km 1.31 - alt. 307 m - Road crossing
  5. 4 : km 2.5 - alt. 276 m - Les Esses
  6. 5 : km 3 - alt. 231 m - Small road towards Barrel
  7. 6 : km 4.18 - alt. 301 m - Furon (river)
  8. 7 : km 4.99 - alt. 304 m - Fork in the road
  9. 8 : km 5.83 - alt. 323 m - La Gerle
  10. 9 : km 6.4 - alt. 323 m - Le Chameau
  11. 10 : km 7.03 - alt. 330 m - Grand Champ
  12. 11 : km 9.27 - alt. 291 m - Brignais - Chemin du Champ du Mont
  13. 12 : km 10.77 - alt. 221 m - Garon siphon bridge - South
  14. 13 : km 11.54 - alt. 223 m - Garon siphon bridge - North
  15. 14 : km 12.51 - alt. 212 m - Le Gué - Garon (rivère)
  16. 15 : km 12.85 - alt. 222 m - Chemin des Lapins
  17. 16 : km 14.19 - alt. 306 m - La Croix Ramier
  18. 17 : km 15.54 - alt. 264 m - Gilbertin
  19. S/E : km 16.69 - alt. 299 m - Chaponost - Place du 8 Mai 1945

Notes

Please note: the route passes through orchards: please do not pick fruit or damage the grounds, out of respect for the farmers' work.
Lightweight trainers are perfectly adequate.
Take your rubbish with you, and nature will thank you.
The route is generally in good condition:
- From (S/E) to (1): Urban environment, no markings.
- From (1) to (2): Urban environment, yellow markings.
- From (2) to (4): Easy walking on a small tarmac road. White and redGR® signposting
- From (4) to (5): The trail is not difficult (at most, be careful of potentially slippery ground during the descent). White and redGR® markings.
- From (5) to (6): Alternatively, follow a small road, then a trail, then another small road. White and redGR® markings.
- From (6) to (9): To begin with, a path takes you across the Furon valley, with sections of descent and then ascent, then continues on a route with no significant elevation gain at plateau level. Yellow markings.
- From (9) to (10): Follow a good path, then a small road. Watch out for traffic from the Grand Champs area onwards. Yellow markings.
- From (10) to (11): This part of the route, which runs along a road, is the least interesting. Watch out for traffic on a moderately wide road with no pedestrian facilities. No markings or signs.
- From (11) to (12): The route follows a small road, then a path leading down to the River Garon. Yellow markings.
- From (12) to (13): The route is easy to follow along paths and small roads. Yellow markings
- From (13) to (14): Follow the same route as on the way there until you reach the bridge, then take the path along the banks of the Garon river. Please note that this area is prone to flooding. Yellow markings
- From (14) to (15): Follow a path, then a small road. Yellow markings.
- From (15) to (16): Follow an uphill path to reach a small road leading to Croix Ramier. Yellow markings.
- From (16) to (17): Follow a good path to a roundabout, then continue along the boulevard, which is less pleasant. Yellow markings.
- From (17) to (S/E): The final stage of the route is quite pleasant, taking you through a large park.
Yellow markings.
Note: the alternative routes via Chemin de la Gerle and the path skirting the north of La Gerle, as shown on IGN maps, are not possible as access is closed.

Worth a visit

Gier Aqueduct: built inthe 1st to 20th centuries AD, it stretches 86 km between Saint-Chamond (Loire) and Lyon (Rhône) with an average gradient of 1.1 m/km. 95% of the canal is underground.
For more information, click here and click here (nice website)
Read the following article about the still uncertain dating of the aqueduct: click here
As an optional extra and off the route, I encourage you to visit two sites located north of Chaponost: the Plat de l'Air alignment (about 2 km away) and the Beaunant siphon bridge (about 3.5 km away).
Saint-Prix Church (Chaponost): for more information, click here

 Always be cautious and plan ahead when you're outdoors. Visorando and the author of this route cannot be held responsible for any accidents occurring on this route.

The GR® and PR® markings are the intellectual property of the Fédération Française de Randonnée Pédestre.

Reviews and comments

4.7 / 5
Based on 15 reviews

Reliability of the description
4.9 / 5
Ease of following the route
4.7 / 5
Route interest
4.6 / 5
papaMEME
papaMEME

Overall rating : 4.7 / 5

Date of your route : Jan 12, 2026
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

Route taken in January 2026 in the middle of a cold spell. Some sections were completely frozen but still passable, which explains why there were so few people there!
A very interesting and easy route.

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User 26797097

Overall rating : 4.7 / 5

Date of your route : Jul 28, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : Yes

Hello, very good application. The GPX import to Strava is not accurate in terms of the duration of the route.

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User 4976670

Overall rating : 4.7 / 5

Date of your route : Apr 27, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

A pleasant route, simple and without difficulty.

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Mesylda
Mesylda

Overall rating : 5 / 5

Date of your route : May 19, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A very beautiful walk that allows you to discover what remains of the Gier aqueduct
No particular difficulty

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jo_dht09
jo_dht09

Overall rating : 5 / 5

Date of your route : Feb 26, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Great walk, quite a few paths along the water's edge, very pleasant!

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Jacques Pouzet
Jacques Pouzet

Overall rating : 4.7 / 5

Date of your route : Dec 16, 2024
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A very beautiful walk
Numerous remains of the aqueduct
Surprising to find yourself surrounded by nature so close to Lyon.

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Philpatou
Philpatou
• Edited:

Overall rating : 4 / 5

Date of your route : Aug 28, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★☆☆ Average
Very busy route : No

Far too many paved sections for my liking, but hey, it's not far from Lyon and you get to walk along the riverbank (GIER), which also gives you the chance to discover the Roman aqueducts and their history...
A peaceful and interesting walk if you don't feel like driving for miles..
Philippe

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monile
monile
• Edited:

Overall rating : 5 / 5

Date of your route : Jan 28, 2024
Reliability of the description : Not used / Not applicable
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

A very nice route for getting back into cycling, with no difficulties whatsoever.
It allowed us to visit the aqueducts, which we had never seen up close before.
It really immerses you in antiquity and reminds you that the Romans were true builders.
A very easy walk to follow with the app, a few very muddy paths, which is normal at this time of year with all the rain we've had.
Thank you for this lovely walk.

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Guillapa
Guillapa

Overall rating : 4 / 5

Date of your route : Nov 28, 2023
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

It took me an hour less than walking at a normal pace. The only slight downside is that halfway through the route, you have to take a country road for about 1 km, which is quite busy.

I wanted to try this walk on my own before taking my friends along. They're going to discover the route

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zbh0170
zbh0170

Hello,

Thank you for your feedback.

I agree with you about the dangers of the road (it is not very wide and some vehicles drive relatively too fast). To be looked into...

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Claire Lelong
Claire Lelong

Overall rating : 4.7 / 5

Date of your route : Apr 09, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : Yes

An interesting hike with lots of aqueduct ruins to discover. A pleasant and varied route.
The only downside is the section of road towards Brignais, which is dangerous and uninteresting. There may be an alternative route to avoid Brignais... Worth looking into

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Pasu95
Pasu95
• Edited:

Overall rating : 5 / 5

Date of your route : Nov 11, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

This hike not only allows you to discover Roman ruins that transport you to another era, but also offers varied trails with different views of the countryside surrounding Lyon. The only downside is the road section to Brignais. The other paved sections are not a hindrance to the hike.
I really enjoyed it!

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somveille
somveille

Overall rating : 5 / 5

Date of your route : May 11, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

An interesting hike from a cultural point of view, but disappointing in terms of the route, with too much tarmac
too much tarmac...

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manuel.fonseca
manuel.fonseca

Overall rating : 4.7 / 5

Date of your route : Feb 01, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

A beautiful walk between Chaponost and Brignais, allowing us to discover other ancient remains of the Gier Aqueduct, which are a delight to behold and a pleasure to learn about.
It owes its name to the fact that it draws water from the sources of the Gier, a tributary of the Rhône.
On the way back, I really enjoyed the maze in Chaponost.

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Bruno Vernay
Bruno Vernay

Overall rating : 5 / 5

Date of your route : Jan 03, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Nice, we really like the aqueduct, but the route is a bit long: towards points 10 and 11 then towards Chaponost, but it's hard to do otherwise and see everything, so it's positive.

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