On the trails of the Monts d’Arrée via the Yeun-Elez bog

Immerse yourself in the heart of the Monts d’Arrée on this beautiful walk, which takes in three of its iconic peaks: Ménez-Mikel, Tuchenn Kador and Roc’h Cléger.

The route also takes you through two picturesque villages and across an area of peat bogs: the “Yeun Elez”. According to Breton tradition, this is where the gates of hell were said to be located.

The final highlight: a strange megalithic alignment lost in the moorland known as ‘An Eured Veign’ (The Wedding of Stones).

Please note: see practical information

Details

699316
Creation:
Last update:
Last review:
  • Walking
    Activity: Walking
  • ↔
    Distance: 11.41 mi
  • ◔
    Average duration: 5h 55 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 801 ft
  • ↘
    Descent: - 801 ft

  • ▲
    Highest point: 1,257 ft
  • ▼
    Lowest point: 748 ft

Photos

Description of the walk

Leave the D785 at the sign for Mont Saint-Michel.
The car park is at the end of the road.

GR®380markings: White and red (very sparse)
+ YellowPR® signs: at junctions

(S/E) With your back to the car park, take the stony path leading down towards the north-west (GR®). At the first Fork in the road (junction with aPR®, signposted), continue straight on along the path, which widens as you keep the imposing television relay station in sight. When you reach the road, follow the D42 for a few dozen metres to the right.

(1) Turn left towards the mast. Take the path on the right which climbs towards Tuchenn Kador (north-east), leaving anotherPR® (signpost) on your left. Follow this single grassy path as it climbs steadily through heathland and heather. From time to time, large cairns mark the route.

(2) On reaching the summit (383 m), veer slightly to the right towards the large boulder, from where you’ll have the finest view of Lake Brennilis (Saint-Michel Reservoir on the map). This summit is also a launch site for paragliders. Then begin a steady descent, staying on the single path, to reach another potential parking area. Ignore thePR® signpost heading left (Lac du Drennec) and turn right towards the D885.

(3) Cross this road (take extreme care) and follow it to the right, passing the “Croaz Torred” (Broken Cross) bar. At the road sign for Botmeur, turn left onto this road.

(4) Immediately turn right onto a wide grassy path that runs behind a house (do not continue along the Botmeur road). It runs parallel to the departmental road at first, then veers away from it. Continue along this path through the meadows until it joins a small road leading to Botcador.

(5) Turn left to cross this hamlet and look out for an old washhouse on your left, renovated in 2001 (dry in August 2017). Note the architecture of the houses. In the heart of the hamlet, a picnic table awaits you near the Tree of Liberty.
Nearby is a remarkable well dating from 1818.

Carry on straight ahead along the small road to the next hamlet, Balanec Ber (another picnic table), and you’ll come to a T-junction.

No signposting

(6) At the junction, turn right despite the various crosses and follow this small road towards Kernevez. It winds through meadows and pastures. The marks on the ground indicate that it is used more by livestock than by cars.

YellowPR® signposts (Route du Yeun): at junctions

(7) APR® path joins from the left; continue straight on (signposted ‘Route du Yeun’) along a track that narrows as it winds its way into the peat bogs.

(8) Cross the Stêr Red stream and turn right onto the only path.

(9) A footbridge takes you across the River Ellez, which feeds into Lake Brennilis. Continue along the section fitted with wooden duckboards. (Please note: some of the planks are slightly damaged and may be slippery when wet).

(10) At the crossroads of paths after the peat bogs, turn left (signposted ‘Route du Yeun’), leaving anotherPR® path to go straight on. Follow the wide clay path, heading south-east, with Roc’h Cléguer (317m) looming overhead. The path has numerous puddles which you’ll need to regularly go round. The map showsthe GR®37, but there are no signs for it on the ground. Walk alongside a coniferous woodland on your left and pass close to a water intake for the fire service (note the black colour of the water, caused by the peat). A little further on, the path turns right and heads uphill.

No signposting (despite theGR®37-GR®380markings on the map)

(11) At the crossroads, let thePR® continue to the left and carry on straight ahead to the menhir by the roadside.

(12) Turn right onto a narrow ridge path heading due west. Here too, theGR® markings shown on the maps are absent. From this ridge line, on your left, you have a view of another ancient mountain range: the Montagnes Noires. The narrow, stony path crosses an area of moorland and heather.

(13) When you come to the first path on the right, take this path to reach a rocky outcrop (305 m) on the left: a viewpoint over the lake and Montagne Saint-Michel, then return to the fork (allow about 700 m there and back). Continue to the right along the single path, still heading west.

(14) At the crossroads, turn right (signposted ‘landes and peat bogs’), then turn left behind the Ty Blaise building to take a path running along the edge of the meadow. This leads to the megalithic site known as ‘An Eured Veign’ (La Noce de Pierres), consisting of 77 or 88 menhirs aligned across the moor (information board). Only a few are visible. Follow this west-facing path. You can turn left for a short round trip to a viewing point with information boards explaining the conservation of this natural area. You’ll reach the D785.

(15) Cross this road (take extreme care) and continue straight ahead along the access road to Mont Saint-Michel.

(16) Turn right and continue up the newly constructed steps, designed to preserve the vegetation. The wide, multi-tiered steps lead to a broad, well-maintained path that takes you to the summit, where the Saint-Michel Chapel stands (381 m). From the top, there is a sweeping panorama of the artificial lake at the Brennilis dam to the east, the summit of Tuchenn kador (383 m) to the north and the western end of the Monts d’Arrée to the west.

Head back down via the wide, well-maintained path taken at the end of the ascent to reach the car park (S/E).

Waypoints

  1. S/E : mi 0 - alt. 1,181 ft - Mont Saint-Michel car park - Chapelle de St-Michel
  2. 1 : mi 0.86 - alt. 988 ft - Television relay station
  3. 2 : mi 2.03 - alt. 1,257 ft - Summit of Tuchenn Kador
  4. 3 : mi 2.95 - alt. 974 ft - Crossing the D785
  5. 4 : mi 3.03 - alt. 958 ft - Grassy path on the right
  6. 5 : mi 3.5 - alt. 869 ft - Botcador
  7. 6 : mi 4.2 - alt. 830 ft - Crossroads on the outskirts of Banalec Ber
  8. 7 : mi 5.04 - alt. 814 ft - Kernevez
  9. 8 : mi 5.5 - alt. 758 ft - Stêr-Red
  10. 9 : mi 5.92 - alt. 748 ft - Footbridge over the - Ellez (rivière) - Affluent de l'Aulne
  11. 10 : mi 6.81 - alt. 850 ft - Crossroads
  12. 11 : mi 8.33 - alt. 843 ft - Crossroads
  13. 12 : mi 8.46 - alt. 830 ft - Menhir
  14. 13 : mi 9.47 - alt. 961 ft - Junction (out and back)
  15. 14 : mi 10.28 - alt. 899 ft - Crossroads
  16. 15 : mi 10.82 - alt. 978 ft - Crossing the D785
  17. 16 : mi 11.16 - alt. 1,112 ft - Stairs leading to the chapel
  18. S/E : mi 11.41 - alt. 1,181 ft - Mont Saint-Michel car park

Notes

Another car park near the Croix Cassée (3)
Hiking boots essential (stony paths and many ruts)
Route only suitable in summer and autumn: many sections are wet or even flooded during other seasons.

Shortcut:
After the (10), leave thePR® on your right and take the path on the right, which climbs steeply past Roch Cléguer and joins the (13)
This shortens the route by around 5 km whilst still taking in the view from Roch Cléguer.

Worth a visit

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

4.6 / 5
Based on 3 reviews

Reliability of the description
4.7 / 5
Ease of following the route
4 / 5
Route interest
5 / 5
FLOCH
FLOCH ★

Thank you for your feedback.
The description has served its purpose well – that is, after all, its aim.

Machine-translated

User 12898947

Overall rating : 4 / 5

Date of your route : Jul 20, 2026
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★★ Very good
Very busy route : No

Fortunately, the description makes up for the lack of signposting

Machine-translated

User 27944649

Overall rating : 5 / 5

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

Very beautiful hike, perfect directions, thank you

Machine-translated

stazzz29
stazzz29

Overall rating : 4.7 / 5

Date of your route : Nov 02, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

A magnificent route that I did in the fog, which gave the hike a very special atmosphere; no major difficulties, but make sure you wear properly waterproof shoes – it’s damp and muddy in places.

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.