Stage 1 of 7 · La Haute Traversée de Belledonne

Start → Pont Geoffroy

Distance
19.5 km
Ascent
+1,564 m
Descent
-589 m
Est. Time
6h 59m
Altitude
319.1–1,407 m
Type
point-to-point
🏔️ Mountainous
🚌

Getting Here

Aiguebelle (bus stop)

630m from trailhead · ~7 min walk

🚌

Getting Out

Pont Geoffroy (bus stop)

15227m from trail end · ~184 min walk

Elevation Profile

400m600m800m1,000m1,200m1,400m0 km5 km10 km15 km20 km1,407m319m
Easy (5–10%) Moderate (10–15%) Steep (15–25%) Flat (<5%)

Route Map

Segment Breakdown

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

SegmentDist↑ / ↓TimeCharacter
Start → km 7.2 (1262m)
319–1,262m
7.2 km+963m / -24m3h 03m🔺 Steep Climb
km 7.2 (1262m) → km 13.3 (1042m)
1,042–1,407m
6 km+218m / -438m1h 47m📉 Descending
km 13.3 (1042m) → Pont Geoffroy
863–1,319m
6.2 km+484m / -206m2h 09m📈 Climbing
Total19.5 km+1,564m / -589m7h 00m

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
4h 29m
Calories
2,098 kcal
Water Needed
3 L
Effort Distance
38.1 km
flat-equivalent
🍫 Recommended: ~45g carbs/hr (202g total) 🧂 Electrolytes: ~2245mg sodium/hr

Terrain Analysis

Runnability
0%
Steep / Technical
% of route below 15% gradient
Climb Ratio
80 m/km
Very steep profile
↑ 1,564m ↓ 589m

Surface & Technicality

Terrain Difficulty Breakdown
Runnable Flat (14%) Easy Grade (41%) Moderate Climb (27%) Steep (19%)
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
0%
Unlikely
100% north-facing slopes
Mud Risk
15%
Low
Ice Risk
0%
Unlikely

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

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

Suggested Gear List

Auto-generated based on 19.5 km, 1564m ascent, max altitude 1407m, ~7h duration.

Essential 5 items
  • 👟
    Trail running shoes / hiking boots
    Required for any trail
  • 📱
    Phone (charged) + offline map
    Navigation & emergency contact
  • 💧
    3L hydration vest
    Estimated 3.5L needed
  • 🍫
    Trail mix, bars & sandwich
    Est. 2449 kcal burn
  • 🆘
    Emergency space blanket
    Critical for preventing hypothermia if you stop moving
Recommended 6 items
  • 🧴
    Sunscreen
    Basic sun protection
  • 🧥
    Light rain jacket
    Weather changes fast in the mountains
  • 🔦
    Headlamp
    7h route — plan for delays
  • 🩹
    Mini first aid kit
    Blister plasters, tape, antiseptic
  • 🥢
    Trekking poles
    19% steep terrain, 1564m+ 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 Start to Pont Geoffroy (19.5 km by trail). You'll need to arrange transport back to your starting point.

Start — Getting There
Start
🚌 Aiguebelle (321m)
🚌 Ferme Gachet (arrêt scolaire) (2.6km)
🚌 Lotissement Marcantoux (arrêt scolaire) (2.8km)
Finish — Getting Back
Pont Geoffroy
🚌 Pont Geoffroy (4.2km)
🚌 Pont Turin (4.5km)
🚌 La Charrière (4.5km)

Nearby Points of Interest

🚌 Transit Stops

  • Argentine Gemelly 3.1 km off trail
  • Lotissement Marcantoux (arrêt scolaire) 2.8 km off trail
  • Le Château (arrêt scolaire) 3.4 km off trail
  • Ferme Gachet (arrêt scolaire) 2.6 km off trail
  • Le Coudray (arrêt scolaire) 3.4 km off trail
  • Les Bottets Haut (arrêt scolaire) 3.0 km off trail
  • Aiguebelle km 0.1 · 321m off trail
  • Pré de Foire (arrêt scolaire) km 0.5 · 4.1 km off trail

🛖 Shelters

  • Shelter 1.9 km off trail
  • Shelter 1.4 km off trail
  • Cabane de Mille km 6.2 · 1.6 km off trail

💧 Water Sources

  • Drinking Water 1.9 km off trail
  • Drinking Water 396m off trail
  • Drinking Water 821m off trail
  • Drinking Water km 0.1 · 462m off trail
  • Drinking Water km 0.1 · 462m off trail

🏠 Mountain Huts

  • Cabane de Champet km 19.2 · 259m off trail

Take this route with you

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