Stage 6 of 7 · La Haute Traversée de Belledonne

Prapoutel - Parking Navettes → Aiguille

Distance
23.4 km
Ascent
+1,665 m
Descent
-2,052 m
Est. Time
9h 09m
Altitude
1,679.5–2,479.7 m
Type
point-to-point
🏔️ Mountainous❄️ Alpine
🚌

Getting Here

Prapoutel - Parking Navettes (bus stop)

6898m from trailhead · ~91 min walk

🚂

Getting Out

Aiguille (train station)

282m from trail end · ~3 min walk

Elevation Profile

1,800m2,000m2,200m2,400m0 km5 km10 km15 km20 km25 km2,480m1,680m
Moderate (10–15%) Steep (15–25%) Easy (5–10%) Flat (<5%)

Route Map

Segment Breakdown

Auto-analyzed from the elevation profile. Each segment shows the dominant character for planning your effort.

SegmentDist↑ / ↓TimeCharacter
Prapoutel - Parking Navettes → km 6.9 (1944m)
1,944–2,480m
6.9 km+697m / -846m2h 58m📉 Descending
km 6.9 (1944m) → km 16.7 (1996m)
1,680–2,371m
9.8 km+995m / -943m4h 04m📈 Climbing
km 16.7 (1996m) → Aiguille
1,681–2,050m
6.7 km+477m / -792m2h 31m📉 Descending
Total23.4 km+1,665m / -2,052m9h 34m

Pace & Fuel Calculator

Adjust your flat 10K pace to see personalized finish time, calorie burn, and hydration needs.

7:00 /km
4:00 /km (elite) 12:00 /km (leisure)
Fast Hiker / Jogger
Est. Finish Time
5h 37m
Calories
2,713 kcal
Water Needed
3.9 L
Effort Distance
50.3 km
flat-equivalent
🍫 Recommended: ~45g carbs/hr (253g total) 🧂 Electrolytes: ~2817mg sodium/hr 🩹 Consider anti-chafe and blister prevention

Terrain Analysis

Runnability
0%
Steep / Technical
% of route below 15% gradient
Climb Ratio
71 m/km
Very steep profile
↑ 1,665m ↓ 2,052m

Surface & Technicality

Terrain Difficulty Breakdown
Runnable Flat (11%) Easy Grade (28%) Moderate Climb (49%) Steep (11%)
Surface Type
Unknown (42%) Asphalt (23%) Gravel (9%) Dirt (9%) Ground (8%) Compacted (3%) Concrete (2%) Wood (2%) Unpaved (2%)

🧗 Challenging terrain with significant elevation changes. Expect to walk the climbs.

Surface Breakdown

Unknown (42%)
Paved (23%)
Gravel (9%)
Dirt (9%)
Natural Ground (8%)
Compacted (3%)
Paved (2%)
Wood (2%)
Unpaved Trail (2%)

Current Conditions

Loading live weather...

Conditions for June

ℹ️ Shoulder season
Snow Risk
0%
Unlikely
83% north-facing slopes
Mud Risk
30%
Moderate
Ice Risk
0%
Unlikely

Snow unlikely at this elevation in June. Trail conditions expected to be clear.

🥾 Muddy sections likely. Waterproof boots recommended.

Best months: May, Jun, Jul, Aug, Sep, Oct

Suggested Gear List

Auto-generated based on 23.4 km, 1665m ascent, max altitude 2479.7m, ~9h duration.

Essential 8 items
  • 👟
    Trail running shoes / hiking boots
    Required for any trail
  • 📱
    Phone (charged) + offline map
    Navigation & emergency contact
  • 💧
    3L hydration vest
    Estimated 4.6L needed
  • 🍫
    Trail mix, bars & sandwich
    Est. 3207 kcal burn
  • 🧴
    Sunscreen SPF 50+
    UV intensifies above 2000m
  • 🧢
    Sun hat / cap
    Exposed alpine terrain
  • 🧥
    Windbreaker / shell jacket
    Summit at 2479.7m — wind chill
  • 🆘
    Emergency space blanket
    Critical for preventing hypothermia if you stop moving
Recommended 6 items
  • 🕶️
    Sunglasses (cat 3+)
    Snow & rock glare at altitude
  • 🧤
    Warm mid-layer (fleece)
    Temps drop ~6°C per 1000m
  • 🔦
    Headlamp
    9h route — plan for delays
  • 🩹
    Mini first aid kit
    Blister plasters, tape, antiseptic
  • 🥢
    Trekking poles
    11% steep terrain, 1665m+ ascent
  • 🧊
    Microspikes / light crampons
    Snow risk in Dec, Jan, Feb
Nice to have 1 items
  • 🦵
    Gaiters
    Keep snow out of boots

Logistics

This route runs from Prapoutel - Parking Navettes to Aiguille (23.4 km by trail). You'll need to arrange transport back to your starting point.

Start — Getting There
Prapoutel - Parking Navettes
🚌 Prapoutel - Parking Navettes (4.2km)
🚌 Prapoutel Patte d'Oie (4.9km)
🚌 Prapoutel Gendarmerie (4.9km)
Finish — Getting Back
Aiguille
🚌 Chamrousse 1650 Le Recoin (269m)
🚌 Télécabine - Office du Tourisme (301m)
🚌 Auberge de Jeunesse (478m)

Nearby Points of Interest

🚌 Transit Stops

  • Lac 1.8 km off trail
  • Ardoisière km 0.3 · 5.0 km off trail
  • Plan 2 km 0.3 · 4.6 km off trail
  • Plan 1 km 0.3 · 4.6 km off trail
  • Prapoutel Patte d'Oie km 0.3 · 4.9 km off trail
  • Prapoutel - Parking Navettes km 0.3 · 4.2 km off trail
  • Bouquetins km 0.3 · 4.4 km off trail
  • P'tits Loups km 0.3 · 4.4 km off trail

🛖 Shelters

  • Chamrousse 1750 Roche Béranger - Centre Commercial km 23.4 · 1.3 km off trail

💧 Water Sources

  • Drinking Water 1.3 km off trail
  • Drinking Water 1.4 km off trail
  • Drinking Water 1.3 km off trail
  • Drinking Water 1.3 km off trail
  • Drinking Water 1.2 km off trail

Take this route with you

Download the GPX file for your GPS watch or phone. Works with Garmin, Suunto, COROS, Apple Watch, and all GPX-compatible apps.

Route data from OpenStreetMap © contributors, licensed under ODbL. Updated 2026-04-02.