GPX downloaded! Open this trail in Isomaps for offline GPS navigation and topo maps.
-
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.
-
All outdoor activities
Hiking, trail running, cycling, ski touring, snowshoeing.
French independent team — GDPR-native
Distance82.57 km
Elevation gain840 m
Elevation loss813 m
Estimated time21 h 20 min
Altitude maximum91 m
Altitude minimum3 m
TypeLoop
DifficultyVery hard
Weather forecast
5-day MeteoBlue forecast at the trail start — free with an account.
Create free account
About this trail
82.57 km loop hiking starting from Saint-Valery-sur-Somme.
This hike includes 1 significant climbs. With a total elevation gain of 404 m across 12.56 km, with an average slope of 3.2%.
- Climb 1 (at km 82.42 km): +404 m over 12.56 km, average slope 3.2%
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
