Bisse de la Tsandra
MODERATE (2/10)Aven → Roua
Use this route
The walk, as far as the open data goes
Getting there
- Start: Aven, village bus stop, 93 m away
- Start: Aven, La Croix bus stop, 236 m away
- Start: Aven, Le Creux-d'Ortcheu bus stop, 295 m away
- Finish: Grand Zour bus stop, 166 m away
Height and time
- High point 1,466 m
- Low point 957 m
- Climb 695 m from a 30 m terrain model, smoothed
- Swiss signpost time 3 h 58 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.
Explore the route
Read the topography, inspect the climb, or preview the route over real terrain.
Route briefing
What comes next
Climbs, huts and decisive places in route order. Not listed does not mean absent: it may not be mapped.
Start
0 m
Aven
Start
Route geometry · source 2026-04-11
About 0 min in
11.5 km remaining
+695 m remaining
Climb
0 m
120 m climb
0.9 km at 12.8% average
OpenStreetMap route data · source 2026-04-11
About 0 min in
11.5 km remaining
+695 m remaining
Route note
0 m
Aven
Village
OpenStreetMap · source 2026-04-11
About 0 min in
11.5 km remaining
+695 m remaining
Climb
1.2 km
120 m climb
1.0 km at 11.5% average
OpenStreetMap route data · source 2026-04-11
About 24 min in
10.4 km remaining
+566 m remaining
Hut
3.6 km
Refuge d’ Airoz (Refuge d’ Aïroz)
Hut
OpenStreetMap · source 2026-04-11
About 1h 13m in
7.9 km remaining
+372 m remaining
Climb
7.7 km
87 m climb
0.8 km at 10.7% average
OpenStreetMap route data · source 2026-04-11
About 2h 37m in
3.8 km remaining
+199 m remaining
Finish
11.5 km
Roua
Finish
Route geometry · source 2026-04-11
About 3h 54m in
0 m remaining
Trail route lab
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Bisse de la Tsandra is a 11.5 km point-to-point moderate hiking route in Switzerland, running from Aven to Roua. The route covers 695m of ascent and 313m of descent, with elevations ranging from 956m to 1,461m. Allow approximately 3h 54m for the full route.
The route is divided into 2 segments. The toughest stretch is the 7.9 km from Refuge d’ Airoz (Refuge d’ Aïroz) to Roua, climbing 461m (allow 2h 33m for this section). In contrast, the 3.6 km from Aven to Refuge d’ Airoz (Refuge d’ Aïroz) is much gentler.
With 80% of the route below 15% gradient, strong trail runners can maintain a good rhythm for much of the distance. The steepest pitches reach 39% gradient.
Budget roughly 2,080 kcal of energy expenditure and 2.3 L of water.
Low-altitude route (max 1461m). Hikeable most of the year.
Trail Splits
Waypoint-to-waypoint breakdown with estimated hiking times (Naismith's Rule).
| Segment | Dist | ↑ Ascent | ↓ Descent | Time | Cum. km |
|---|---|---|---|---|---|
📍 Aven → Refuge d’ Airoz (Refuge d’ Aïroz) | 3.6 km | +343m | -57m | 1h 20m | 3.6 |
🏠 Refuge d’ Airoz (Refuge d’ Aïroz) → Roua | 7.9 km | +461m | -257m | 2h 33m | 11.5 |
| Total | 11.5 km | +695m | -313m | 3h 54m | 11.5 |
Pace & Fuel Calculator
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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
🌲 Largely under trees. Good canopy at lower elevations, so the open sections are the ones to plan for.
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 Bisse de la Tsandra is usually best from May to October.
Weather this week
Loading the forecast for low point (957 m) and high point (1,466 m)…
Weather by month
Typical weather on this trail: at the lowest point (957 m) and the highest point (1,466 m). Select a month to see why it is rated as it is.
| Month | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather | Mixed | Poor | Mixed | Mixed | Good | Good | Good | Good | Good | Good | Mixed | Mixed |
| High point, day / night | 3°/-5° | 3°/-5° | 5°/-3° | 8°/0° | 13°/5° | 17°/8° | 19°/10° | 20°/11° | 15°/7° | 12°/5° | 7°/1° | 5°/-3° |
| Low point, day / night | 4°/-5° | 5°/-4° | 10°/-1° | 15°/3° | 19°/8° | 23°/11° | 24°/12° | 23°/12° | 19°/8° | 14°/5° | 8°/0° | 5°/-3° |
| Rain, mm | 132 | 114 | 104 | 102 | 134 | 105 | 97 | 102 | 90 | 114 | 132 | 146 |
| Snow at high point | Possible | Possible | Possible | Possible | – | – | – | – | – | – | Possible | Possible |
| Daylight | 8 h 59 | 10 h 19 | 11 h 49 | 13 h 30 | 14 h 56 | 15 h 46 | 15 h 28 | 14 h 14 | 12 h 38 | 11 h | 9 h 29 | 8 h 39 |
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.
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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 11.5 km, 695m ascent, max altitude 1461.3m, ~4h 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
- 🍫 Trail mix, bars & sandwichEst. 2080 kcal burn
- 🧴 SunscreenBasic sun protection
- 🧥 Light rain jacketWeather changes fast in the mountains
- 🩹 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 Aven to Roua (11.5 km by trail). You'll need to arrange transport back to your starting point.
Nearby Points of Interest
🏠 Mountain Huts
- Refuge d’ Airoz (Refuge d’ Aïroz) km 3.6 · 1.9 km off trail
📍 Nearby Places
- Padouaire km 0.4 · 1.4 km off trail
- Nevedet Dessous km 0.1 · 2.1 km off trail
- Orpelin km 0.4 · 2.1 km off trail
- Le Moury km 2.4 · 2.1 km off trail
- Biolla km 3.1 · 824m off trail
Route Details
- Network
- Local Trail Network
- Sport
- hiking
- Start
- Aven
- End
- Roua
- Start Coordinates
- 46.23714, 7.27121
- 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.