La Cham de Mars from Mézilhac

This hike on the Ardèche plateau is relatively flat and takes you to a summit with superb 360° views of the Massif Central and the Alps, and even Mont Blanc on a clear day.
Please note: the route on the way there has been designed to showcase the beauty of the paths and landscapes. The paths are not marked and can sometimes be difficult to find. A good knowledge of the area and maps is necessary. The return via theGR® de Pays is easier and more direct.

Details

620019
Creation:
Last update:
Last review:
  • Walking
    Activity: Walking
  • ↔
    Distance: 11.38 km
  • ◔
    Average duration: 4h 00 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 266 m
  • ↘
    Descent: - 263 m

  • ▲
    Highest point: 1,343 m
  • ▼
    Lowest point: 1,141 m

Photos

Description of the walk

Parking is available in the village of Mézilhac, in the church square or the surrounding squares.

(S/E) Leave the church square to the east and join the D102, which you take on the left. Immediately after, take the path that branches off to the right of the cross and heads towards the orientation table.

(1) After going around the hill, the path heads south. Opposite a signpost, leave this path and take a path on the left that runs almost horizontally through a grassy amphitheatre. Remember to close the gate behind you and the next one.
At the three-way junction before entering the woods, take the right-hand branch. In the woods, the path becomes a road and then joins a small paved road. Continue right on this road.

(2) At the crossroads, turn left and continue along this small road until you reach the D122, ignoring the signposted path on the left.

(3) After crossing the road, take the path that climbs straight up into the woods, leaving the red and yellow markedGR® de Pays on your left and a more horizontal path on your right. To avoid the rocky and unpleasant forest track, you can use parallel sections of the old path, sometimes to the right and sometimes to the left of the track.

(4) After an initial climb through a beech forest, the path arrives at a flat area with an unobstructed view to the right. Leave a path on your right. At the end of the flat area, a second path on the right is marked on the map but is not visible. Continue climbing through the woods.
From here, the path is not always very visible but it follows the IGN map well. In the last section, however, it deviates slightly from the map, turning right and then left along a narrow path in the middle of a blueberry field.
Even if you feel like you are getting a little lost, keep climbing and you will eventually come out onto the forest road that goes around the knoll.

(5) Take this road on the left and descend while admiring the view of the Alps on a clear day.

(6) Just after a stream, take a path going uphill on the right (open the gate and close it behind you). At the next crossroads, after a gate, turn left. The path goes around a volcanic knoll and arrives at the ruins of the Bourlateyron farm. Close all the gates here too.

(7) At the farm, you will arrive at theGR® de Pays marked in red and yellow. Cross straight ahead to take a path marked in white and yellow. The start of this path is a little difficult to spot due to tree felling. Leave the felled tree trunks on your right and continue along the north side of the ridge. Further on, the path descends, then turns right and climbs back up alongside a fence.

(8) Leave the paths on the right and left and continue straight ahead until you reach a hiking signpost.

(9) Take the path that climbs up to the right and arrive at the summit of Cham de Mars (orientation table).

(10) Retrace your steps along the same path to the ruins of Bourlateyron.

(7) Instead of turning left, continue straight ahead on theGR® de Pays, which you will follow until you reach your destination.

(11) At the crossroads, turn right, continue to the D122, then resume the outward route until you reach the crossroads in front of La Feuille farm.

(2) Leave the road you took on the way there on your right and continue on the left to Mézilhac (S/E).

Waypoints

  1. S/E : km 0 - alt. 1,141 m - Parking Church square
  2. 1 : km 0.36 - alt. 1,172 m - On the left, there is a barrier
  3. 2 : km 1.58 - alt. 1,174 m - Turn left on the way there and back
  4. 3 : km 2.28 - alt. 1,166 m - Path in the middle.
  5. 4 : km 2.87 - alt. 1,249 m - Open flat area
  6. 5 : km 3.64 - alt. 1,326 m - Forest road
  7. 6 : km 4.38 - alt. 1,289 m - Turn right after the small ravine.
  8. 7 : km 5.11 - alt. 1,290 m - Bourlateyron. Cross the GRP
  9. 8 : km 5.6 - alt. 1,301 m - Go straight ahead
  10. 9 : km 5.88 - alt. 1,320 m - Turn right on the way there - Le Champ de Mars
  11. 10 : km 6.03 - alt. 1,343 m - La Cham de Mars
  12. 11 : km 7.32 - alt. 1,282 m - Turn right at the crossroads
  13. S/E : km 11.38 - alt. 1,141 m - Parking Church square

Notes

After (1), the route crosses pastures. If there are herds and dogs, you can always turn back and reach (2) via the return route.
Similarly, between (6) and (7), you may encounter up to three barriers that are difficult to open. To avoid them, at (6), you can continue straight ahead to the crossroads (11) and turn right to find the ruins of Bourlateyron.

The last part of the return journey follows theGR® de Pays "Tour de la Montagne Ardéchoise" marked in red and yellow.

Variations

  • For a shorter hike, you can park at (3). The loop is then approximately 7.5 km long.
  • To return, at (2), you can also climb up to the ridge via a track that branches off between the two tarmac roads. Staying on the ridge, after a few barriers, you will arrive at the orientation table and then at (1).

Worth a visit

The spelling of the title "La Cham de Mars" is the name I have always heard, a cham referring to an uncultivated peak, like the Cham du Cros a little further south. However, according to another etymology, it does indeed refer to a field, referring to a battlefield during the Gallic Wars between the Helviens (the Ardéchois) allied with the Romans and the Arvernes.

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

4.4 / 5
Based on 31 reviews

Reliability of the description
4.4 / 5
Ease of following the route
4.2 / 5
Route interest
4.7 / 5
JuliaM
JuliaM

Regarding the term "Cham":

"La cham (pre-Celtic calmis, then Occitan calm or chauma = bare plateau): Lachamp-Raphaël (La Cham in the 15th century), the Cham-longe plateau (= cham longue, in St-Etienne de Lugdarès), the Cham du Cros, the Champ de Mars (often confused with "champ")..." (source: Université populaire de la Basse Ardèche: see document: Toponymie en Ardèche Méridionale).

"La Cham: comes from the Celtic "Kalm", which gave "Cham" in Occitan for a plateau formed by basalt lava flows typical of the Massif Central; this tells us about the volcanic origin of the first village on the Ardèche plateau."
(source:https://lachamp-raphael.fr/histoire-et-p....

There is also La Cham des Bondons Mont Lozère.

Machine-translated

juslie07
juslie07

Overall rating : 3.7 / 5

Date of your route : Aug 25, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★☆ Good
Very busy route : No

As mentioned in the introduction, the path is difficult to follow, with no signposts along the way, so you'll often find yourself staring at your phone, but it's very pretty. Enjoy this part of the walk, as the return journey is very easy (just follow the GR trail) but much less scenic.

Machine-translated

User 27259142

Overall rating : 4 / 5

Date of your route : Aug 15, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★☆ Good
Very busy route : No

Beautiful hike that is easy to manage, even in midsummer, as you walk through magnificent pine and beech forests. Blueberries, heather and broom line the trail. The view is fantastic

Machine-translated

Irène
Irène

Overall rating : 4.7 / 5

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

A very beautiful and easy hike with magnificent views, especially at the summit. ⚠️ : not recommended without the Visorando GPS app. In May and June, there is a flower festival 😀, which we thoroughly enjoyed.

Machine-translated

JuliaM
JuliaM

Overall rating : 5 / 5

Date of your route : Aug 03, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A very beautiful, pleasant and easy hike, with much of it shaded by the undergrowth (which is important in hot weather). I didn't follow the description to the letter, as I was drawn to the forest path. Very beautiful views.

Machine-translated

Laurentdominique
Laurentdominique

Overall rating : 3.7 / 5

Date of your route : Jul 30, 2024
Reliability of the description : ★★★☆☆ Average
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★★ Very good
Very busy route : No

Poorly marked path

Machine-translated

Éric Camille
Éric Camille

Magnificent landscapes

Machine-translated

besnardeau jean-pierre
besnardeau jean-pierre

A very beautiful hike with magnificent views. The route is pleasant and not too difficult, but the signage is poor in many places, making it very complicated without a GPS.

Machine-translated

Éric Camille
Éric Camille

Overall rating : 4.3 / 5

Date of your route : Aug 28, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : Yes

Be careful in some places, as the route is not easy to follow.
Easy, shaded hike
Little road and no traffic.

Machine-translated

Randamont
Randamont

Overall rating : 5 / 5

Date of your route : Jul 24, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Easy hike with no technical difficulties. Beautiful views from the top of Champs de Mars

Machine-translated

fanee
fanee

Overall rating : 2.3 / 5

Date of your route : Oct 07, 2022
Reliability of the description : ★★☆☆☆ Disappointing
Ease of following the route : ★☆☆☆☆ Very disappointing
Route interest : ★★★★☆ Good
Very busy route : No

Now, you really need to make an effort with the signposting, which did not disturb the animals or their peace and quiet at all.
First of all, you HAVE to pass in front of the bar, because there are three crosses at the starting point!
Then don't go all the way to the orientation table!
You have to keep your nose in the app the whole time, not on the trail, which isn't great!
Because the hike is worth it!

Machine-translated

bddp
bddp

Overall rating : 4.3 / 5

Date of your route : Aug 15, 2022
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

A very beautiful hike, without difficulty, quite varied, the view from the Cham de Mézilhac is magnificent, even with a little fog (it rained the day before). We left from the woods between the Col des 4 Vios and the Cham de Mézilhac to be at the summit at 7 a.m. for sunrise. It was chilly and windy, but that added to the charm. On the way back, we picked a small container of blueberries. A walk to recommend.

Machine-translated

Christian21
Christian21

Overall rating : 4.7 / 5

Date of your route : Jul 20, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

We did the short version, starting from Le Brouas and returning via the GR for ease and shade.
As a result, the hike is accessible even for tired knees and offers a beautiful view from the summit, even if the fog prevented us from seeing the Alps. Thank you for this lovely walk.

Machine-translated

pb07
pb07

Thank you, almati07, for this information. I was not familiar with this interpretation of the name. Here, I had always heard it pronounced as "Cham du Cros," as Thierryb26 said. If you have any references where I could find more details, I would appreciate it.

Machine-translated

Thierryb26
Thierryb26

There are other places in the region with names containing Cham or derivatives (Cham del Cros, Lachamp Raphael, etc.). Another possible origin is a deformation of the Occitan word chalm (moorland, bare hill)

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.