Ancien Bisse du Levron
EASY (1.3/10)La Chaux → Les Déforants
Use this route
The walk, as far as the open data goes
Getting there
- Start: Chaux Express railway station, 412 m away
Height and time
- High point 2,235 m
- Low point 1,884 m
- Climb 148 m from a 30 m terrain model, smoothed
- Swiss signpost time 2 h 51 the official method, on our line
Computed on 2026-09-20 from OpenStreetMap, the terrain model and the federal route layer — not read from the operator's own page, and not checked on the ground. Hikes we have reviewed say who published each fact and when.
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Route briefing
What comes next
Descents, huts and decisive places in route order. Not listed does not mean absent: it may not be mapped.
Start
0 m
La Chaux
Start
Route geometry · source 2026-04-11
About 0 min in
10.7 km remaining
+148 m remaining
Hut
0 m
Cabane Mont Fort
Hut
OpenStreetMap · source 2026-04-11
About 0 min in
10.7 km remaining
+148 m remaining
Route note
0 m
Mont Gelé
Peak
OpenStreetMap · source 2026-04-11
About 0 min in
10.7 km remaining
+148 m remaining
Route note
300 m
Les Shlerondes
Hamlet
OpenStreetMap · source 2026-04-11
About 5 min in
10.4 km remaining
+148 m remaining
Descent
1.1 km
267 m descent
3.1 km at 8.7% average
OpenStreetMap route data · source 2026-04-11
About 19 min in
9.5 km remaining
+131 m remaining
Descent
10.1 km
65 m descent
0.5 km at 12.0% average
OpenStreetMap route data · source 2026-04-11
About 2h 49m in
540 m remaining
+8 m remaining
Finish
10.7 km
Les Déforants
Finish
Route geometry · source 2026-04-11
About 2h 58m in
0 m remaining
Trail route lab
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Ancien Bisse du Levron is a 10.7 km point-to-point easy hiking route in Switzerland, running from La Chaux to Les Déforants. The route covers 148m of ascent and 562m of descent, with elevations ranging from 1,884m to 2,233m. Allow approximately 2h 58m for the full route.
The route is divided into 6 segments.
With 91% of the route below 15% gradient, strong trail runners can maintain a good rhythm for much of the distance. Some pitches hit 41% gradient, so trekking poles are strongly recommended.
Budget roughly 1,338 kcal of energy expenditure and 1.8 L of water.
Mountain route up to 2234m. Best June–October; snow possible into June.
Trail Splits
Waypoint-to-waypoint breakdown with estimated hiking times (Naismith's Rule).
| Segment | Dist | ↑ Ascent | ↓ Descent | Time | Cum. km |
|---|---|---|---|---|---|
📍 La Chaux → Attelas | 3.7 km | +62m | -307m | 1h 06m | 3.7 |
⛰️ Attelas → Mont Rogneux | 0.8 km | +17m | -28m | 13 min | 4.5 |
⛰️ Mont Rogneux → Tête des Etablons | 1.8 km | +41m | -63m | 28 min | 6.3 |
⛰️ Tête des Etablons → Savoleyres | 1.1 km | +17m | -13m | 15 min | 7.4 |
⛰️ Savoleyres → Tournelle | 0.8 km | +8m | -17m | 11 min | 8.2 |
⛰️ Tournelle → Les Déforants | 2.4 km | +76m | -134m | 43 min | 10.7 |
| Total | 10.7 km | +148m | -562m | 2h 58m | 10.7 |
Pace & Fuel Calculator
Adjust your flat 10K pace to see personalized finish time, calorie burn, and hydration needs.
Terrain Analysis
Surface & Technicality
Gradient describes steepness, not exposure, scrambling, footing or current conditions. Technical difficulty is unknown where no mapped rating is available.
Tree cover and UV
☀️ Little to hide under. About 33% of the route is above the treeline, so wherever the terrain is not shading you there is nothing else to. Sunscreen, a hat and extra water.
Canopy is inferred from elevation against a 2000 m Alpine treeline and from gradient below it, not from observed tree data — treat it as an estimate. It is a different question from the terrain shade above, which is about whether a mountain is between you and the sun at a given time.
Current Conditions
Based on 1991–2020 climate averages, the weather on Ancien Bisse du Levron is usually best from July to September. Snow is likely at the high point (2235 m) in December to May.
Weather this week
Loading the forecast for low point (1,884 m) and high point (2,235 m)…
Weather by month
Typical weather on this trail: at the lowest point (1,884 m) and the highest point (2,235 m). Select a month to see why it is rated as it is.
| Month | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather | Poor | Poor | Poor | Poor | Poor | Mixed | Good | Good | Good | Mixed | Poor | Poor |
| High point, day / night | -3°/-10° | -3°/-10° | 0°/-7° | 3°/-4° | 8°/0° | 13°/4° | 14°/6° | 14°/6° | 10°/3° | 7°/0° | 1°/-4° | -2°/-8° |
| Low point, day / night | 0°/-8° | 0°/-8° | 3°/-5° | 7°/-2° | 12°/3° | 16°/7° | 17°/8° | 17°/8° | 13°/5° | 9°/2° | 4°/-3° | 1°/-6° |
| Rain, mm | 126 | 107 | 103 | 97 | 127 | 106 | 91 | 95 | 89 | 113 | 138 | 139 |
| Snow at high point | Likely | Likely | Likely | Likely | Likely | Possible | – | – | – | Possible | Possible | Likely |
| Daylight | 9 h | 10 h 20 | 11 h 49 | 13 h 30 | 14 h 55 | 15 h 44 | 15 h 26 | 14 h 13 | 12 h 37 | 11 h 01 | 9 h 30 | 8 h 40 |
Source: TerraClimate 1991–2020 monthly averages. Averages for the area at each point’s elevation (4 km grid, corrected for height). Not a forecast or a report of current trail conditions. These values describe the whole trail's lowest and highest points. Snow at the high point is estimated with a simple snowpack model from these temperatures and precipitation, not observed; steep islands and high summits can hold more snow than it shows. Daylight is for the 15th of each month. Hut, transport and park seasons are separate: check them for your dates.
Averages cannot establish current trail conditions. Check recent local reports, the forecast and restrictions before departure. Snow and ice can persist on shaded sections or arrive outside the usual season.
Current snow conditions
Insufficient evidence
Enable “Current snow map” in the route map’s Map layers to see the surrounding snow evidence. Current conditions do not describe a future departure date.
Planning ahead?
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Safety & Bailouts
We do not have a verified emergency exit plan for this route. A nearby settlement, hut or route endpoint is not necessarily reachable or open. Do not leave the trail based on a straight-line distance or compass direction.
Review possible exits against current local information before your trip. In an emergency, contact local rescue services; this page is not live rescue guidance.
Suggested Gear List
Auto-generated based on 10.7 km, 148m ascent, max altitude 2233.5m, ~3h duration.
- 👟 Trail running shoes / hiking bootsRequired for any trail
- 📱 Phone (charged) + offline mapNavigation & emergency contact
- 💧 2L hydration packWater source information is incomplete; plan supplies before departure
- 🍫 Energy bars & gelsEst. 1338 kcal burn
- 🧴 Sunscreen SPF 50+UV intensifies above 2000m
- 🧢 Sun hat / capExposed alpine terrain
- 🧥 Windbreaker / shell jacketSummit at 2233.5m — wind chill
- 🕶️ Sunglasses (cat 3+)Snow & rock glare at altitude
- 🧤 Warm mid-layer (fleece)Temps drop ~6°C per 1000m
- 🩹 Mini first aid kitBlister plasters, tape, antiseptic
- 🧊 Microspikes / light cramponsSnow risk in Jan, Feb, Mar
- 🦵 GaitersKeep snow out of boots
- 💰 Cash (CHF/EUR)Mountain huts often cash-only
Logistics
This route runs from La Chaux to Les Déforants (10.7 km by trail). You'll need to arrange transport back to your starting point.
Nearby Points of Interest
⛰️ Peaks
- Mont Gelé 2.0 km off trail
🏠 Mountain Huts
- Cabane Mont Fort 757m off trail
📍 Nearby Places
- Les Naires km 0.5 · 404m off trail
- Les Tsezaux km 0.7 · 1.3 km off trail
- Les Siés km 0.7 · 1.4 km off trail
- Le Mayen km 0.7 · 1.6 km off trail
- Les Miaux km 1.2 · 1.6 km off trail
Route Details
- Network
- Local Trail Network
- Sport
- hiking
- Start
- La Chaux
- End
- Les Déforants
- Start Coordinates
- 46.07971, 7.27297
- OpenStreetMap
- View on OSM →
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Route resources
Specialist links and source details for this route. Everyday actions are kept in the route rail above.