{ const t = document.getElementById('trace-toast'); if (!t) return; t.querySelector('.toast-msg').textContent = $event.detail.msg; t.classList.add('show', $event.detail.type === 'danger' ? 'bg-danger' : ($event.detail.type === 'warning' ? 'bg-warning' : 'bg-dark'), 'text-white'); setTimeout(() => t.classList.remove('show'), 3500); })()">
Directions to trailhead
GPX downloaded! Open this trail in Isomaps for offline GPS navigation and topo maps.
No ads, no selling of your data. European mapping, privacy respected.
This route in your pocket: offline maps, guidance and safety alerts.
Distance89.72 km
Elevation gain5758 m
Elevation loss5758 m
Estimated time31 h
Altitude maximum1876 m
Altitude minimum671 m
TypeLoop
DifficultyVery hard
Weather forecast
5-day MeteoBlue forecast at the trail start — free with an account.
Create free account
About this trail
89.72 km loop hiking starting from Villard-de-Lans.
This hike includes 12 significant climbs. With a total elevation gain of 4362 m across 30.63 km, with an average slope of 14.2%.
- Climb 1 (at km 3.18 km): +264 m over 2.54 km, average slope 10.4%
- Climb 2 (at km 9.15 km): +69 m over 821 m, average slope 8.4%
- Climb 3 (at km 12.02 km): +197 m over 1.71 km, average slope 11.5%
- Climb 4 (at km 16.44 km): +288 m over 1.93 km, average slope 14.9%
- Climb 5 (at km 32.76 km): +774 m over 5.24 km, average slope 14.8%
- Climb 6 (at km 46.47 km): +910 m over 5.59 km, average slope 16.3%
- Climb 7 (at km 50.49 km): +48 m over 391 m, average slope 12.3%
- Climb 8 (at km 56.13 km): +58 m over 993 m, average slope 5.8%
- Climb 9 (at km 59.84 km): +361 m over 2.36 km, average slope 15.3%
- Climb 10 (at km 68.16 km): +234 m over 1.66 km, average slope 14.1%
- Climb 11 (at km 76.23 km): +778 m over 3.77 km, average slope 20.6%
- Climb 12 (at km 87.29 km): +381 m over 3.63 km, average slope 10.5%
isomaps
Scan to open this route in the app
This route in your pocket: offline maps, guidance and safety alerts.
-
Share photos of your trails
Help the community discover what each route really looks like.
-
No ads, no third-party trackers
Privacy-first analytics, hosted in France. Your data stays yours.
-
Truly free — no hidden premium
Topo maps, GPX, offline use included. No premium paywall.
-
A real app, not just a website
iOS + Android with offline topo maps and live GPS navigation.
French independent team — GDPR-native