812Trail Run from Les Houches to Les Plans
From Les Houches · Auvergne-Rhône-Alpes, France
Crosses into Italy and Switzerland
Community route · Hiking · Saved 11 Aug 2026
812Trail Run from Les Houches to Les Plans is a 180.6 km hike point-to-point route from Le Bourgeat near Les Houches, with 8432m of climbing and an effort score of 265.
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Terrain & grades
80% at ≤15% gradeThis point-to-point packs 47m of climb per kilometre, which makes it a hilly endurance profile. 80% of the measured line is at 15% grade or less (slope only, not surface or technicality). The hardest kilometre is around km 160, gaining about 335m. Total route distance is 180.6 km.
Snow & conditions
Snow not assessedCurrent snow evidence is not available for this route. Missing data does not establish snow-free conditions. This route reaches 3270m, where seasonal snow may linger.
Route sections
Epic effort, estimated around 51h 59m moving time using a hike model: 12:00 min/km flat pace plus about 14h 20m for 8432m of climbing. Expect 9% steep-grade exposure.
Fuel & gear
Plan roughly 279 small fuel units, then adjust for weather, aid, and personal effort.
Surface
Surface classes from OpenStreetMap, matched to the line. Ways without a surface tag are classed by their road type, so this is an estimate.
Path difficulty, as tagged in OpenStreetMap
- T1 hiking: 11.4 km
No difficulty tag on 39.4 km of path or track: unknown, not easy.
The SAC hiking scale mappers give each path. It is not a check of exposure, the weather or snow on the day.
On roads with traffic: 30.3 km in 18 stretches (the longest 5.3 km). Roads of class tertiary or bigger in OpenStreetMap; crossings and stretches under 100 m are not counted.
Elevation Profile
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