Stage 5 of 7 · La Haute Traversée de Belledonne

La Martinette → Prapoutel - Parking Navettes

Distance
19.6 km
Ascent
+1,980 m
Descent
-970 m
Est. Time
8h 01m
Altitude
1,083.6–2,549.1 m
Type
point-to-point
🏔️ Mountainous❄️ Alpine
🚌

Getting Here

La Martinette (bus stop)

619m from trailhead · ~8 min walk

🚌

Getting Out

Prapoutel - Parking Navettes (bus stop)

6898m from trail end · ~91 min walk

Elevation Profile

1,200m1,400m1,600m1,800m2,000m2,200m2,400m2,600m0 km5 km10 km15 km20 km2,549m1,084m
Easy (5–10%) Steep (15–25%) Flat (<5%) Moderate (10–15%)

Route Map

Segment Breakdown

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

SegmentDist↑ / ↓TimeCharacter
La Martinette → km 7.8 (2140m)
1,084–2,142m
7.8 km+1176m / -119m3h 35m🔺 Steep Climb
km 7.8 (2140m) → km 14.9 (2244m)
2,091–2,549m
7.1 km+712m / -608m2h 54m📈 Climbing
km 14.9 (2244m) → Prapoutel - Parking Navettes
1,730–2,244m
4.7 km+444m / -594m1h 58m📉 Descending
Total19.6 km+1,980m / -970m8h 27m

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 10m
Calories
2,409 kcal
Water Needed
3.4 L
Effort Distance
44.3 km
flat-equivalent
🍫 Recommended: ~45g carbs/hr (233g total) 🧂 Electrolytes: ~2589mg sodium/hr

Terrain Analysis

Runnability
0%
Steep / Technical
% of route below 15% gradient
Climb Ratio
101 m/km
Very steep profile
↑ 1,980m ↓ 970m

Surface & Technicality

Terrain Difficulty Breakdown
Runnable Flat (13%) Easy Grade (38%) Moderate Climb (22%) Steep (27%)
Surface Type
Unknown (42%) Asphalt (23%) Gravel (9%) Dirt (9%) Ground (8%) Compacted (3%) Concrete (2%) Wood (2%) Unpaved (2%)

🥾 Mixed terrain: expect sustained climbs between runnable sections.

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
6%
Unlikely
64% 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 19.6 km, 1980m ascent, max altitude 2549.1m, ~8h duration.

Essential 8 items
  • 👟
    Trail running shoes / hiking boots
    Required for any trail
  • 📱
    Phone (charged) + offline map
    Navigation & emergency contact
  • 💧
    3L hydration vest
    Estimated 4.0L needed
  • 🍫
    Trail mix, bars & sandwich
    Est. 2807 kcal burn
  • 🧴
    Sunscreen SPF 50+
    UV intensifies above 2000m
  • 🧢
    Sun hat / cap
    Exposed alpine terrain
  • 🧥
    Windbreaker / shell jacket
    Summit at 2549.1m — wind chill
  • 🆘
    Emergency space blanket
    Critical if injured at altitude
Recommended 6 items
  • 🕶️
    Sunglasses (cat 3+)
    Snow & rock glare at altitude
  • 🧤
    Warm mid-layer (fleece)
    Temps drop ~6°C per 1000m
  • 🔦
    Headlamp
    8h route — plan for delays
  • 🩹
    Mini first aid kit
    Blister plasters, tape, antiseptic
  • 🥢
    Trekking poles
    27% steep terrain, 1980m+ 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 La Martinette to Prapoutel - Parking Navettes (19.6 km by trail). You'll need to arrange transport back to your starting point.

Start — Getting There
La Martinette
🚌 Les Millets (203m)
🚌 La Martinette (344m)
🚌 Fond de France (533m)
Finish — Getting Back
Prapoutel - Parking Navettes
🚌 Prapoutel - Parking Navettes (3.0km)
🚌 Prapoutel Gendarmerie (3.4km)
🚌 Prapoutel Patte d'Oie (3.7km)

Nearby Points of Interest

🚌 Transit Stops

  • La Ferrière Village-Écoles km 0.2 · 3.0 km off trail
  • Le Petit Thiervoz km 0.2 · 4.2 km off trail
  • Camorel km 0.2 · 2.0 km off trail
  • La Ferrière La Chapelle km 0.2 · 2.7 km off trail
  • Le Curtillard km 0.2 · 1.4 km off trail
  • Le Grand Thiervoz km 0.2 · 1.1 km off trail
  • Fond de France km 0.2 · 533m off trail
  • Les Millets km 0.2 · 203m off trail

🛖 Shelters

  • Camorel km 0.2 · 2.0 km off trail
  • Shelter km 0.2 · 2.0 km off trail
  • Les Millets km 0.2 · 195m off trail
  • La Martinette km 0.2 · 332m off trail
  • Shelter km 4 · 1.2 km off trail

💧 Water Sources

  • Drinking Water km 0.2 · 542m off trail
  • Drinking Water km 0.2 · 475m off trail
  • Drinking Water km 0.2 · 344m off trail
  • Drinking Water km 0.2 · 276m off trail
  • Drinking Water km 0.5 · 2.6 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.