Col du Reray et Grand Château (1,199 m)

Trail specs

Distance9,4 km

Ascent+890 m

Descent-890 m

Average time3h20

DifficultyHard

Highest point1198 m

Lowest point660 m

TypeLoop

TrailheadSaint-Étienne, Bonneville

Water sourcesNo reliable water source along the route. Carry 2 L of water per person.

Best seasonJune to October

GPSN 46.09232 / E 6.41349

GPX track · Col du Reray et Grand Château (1,199 m)

Download the GPX file to follow the route on your GPS or phone. Works with Garmin, Suunto, Apple Watch and all major hiking apps.

4 Waypoints · 9,4 km · Loop

Download the GPX

Topographic map

Elevation profile

Waypoints

D

Start (660 m)

km 0,0 660 m
1

Col du Reray (940 m)

km 2,4 940 m 56 min from previous waypoint
2

Grand Château (1,199 m)

km 3,9 1199 m 44 min from previous waypoint
A

Finish (660 m)

End of the hike.

km 9,3 660 m 1h05 from previous waypoint

Detailed route description

This loop hike starting from Saint-Étienne, Bonneville totals 9.34 km with 886 m of elevation gain. Rated hard (4/5 stars), it requires about 3h20 of effort depending on your pace.

Elevation profile

The route ranges from 660 m to 1,198 m, with 881 m of descent on the way down.

Notable waypoints

The main points along the way are Col du Reray (940 m) (km 2.36), Grand Château (1,199 m) (km 3.9).

Practical tips

As with any mountain outing, check the weather before setting off. Carry at least 2 L of water per person, warm layers (even in summer, conditions change fast at altitude), solid hiking boots and energy snacks. This hike requires good physical condition and mountain experience. Start early to avoid the heat and the afternoon thunderstorms common in summer. Always tell someone your route.

Best season: June to October.