Home Destinations France Auvergne-Rhône-AlpesCormet de Roselend

Hard

Cycling

🇫🇷 France

Satellite

This track was identified and mapped via high-resolution satellite imagery.

ID: FR-ARA-26

Cormet de Roselend

Added on 10 Oct 2026

Logged by @trailx

Cormet de Roselend (1,968 m) is one of the great Tour de France climbs. The classic side starts in Beaufort: 20.3 km at an average 6.0%, gaining 1,227 m. Climbs past the Roselend lake and dam. First Tour appearance: 1979 (16 times).

Trail Map

Initialising Map Engine...

Trail Profile

General Instructions

Season: About late May to mid-October. Carry a windproof layer for the descent, enough water and food for the climb, and check road status before you go. Descend with care: these are open roads shared with cars and motorbikes.

Mission Logs59 waypoints

Distance	Direction & Instruction	Gradient
0.0 km	N Start Point	0%
0.5 km	S Continue on track	6%
1.0 km	SE Steep Ascent	11%
1.1 km	E Steep Ascent	19%
1.5 km	E Steep Ascent	12%

Note: Gear suggestions are based on terrain gradient and are for reference only.

Weather check

At Start

745m

Sampling Micro-Climate...

45.7172, 6.5745

Slide to preview conditions across the entire route • Point: 45.7172, 6.5745 @ 745m

Quick Stats

Distance

20.49 km

Type

Cycling Sector

Elevation Range

744m - 1969m

Max Elevation

1969 m

Max Gradient

28.5%

11.3%

Highlights

Ride the Beaufort side, the way the Tour climbs it
Top out at 1,968 m
Climbs past the Roselend lake and dam
Ride a climb from the 2025 Tour de France

Field Radio Protocol

VHF-UHF Communication

Signal Verified

Emergency Simplex

146.520MHz

Team Coordination

446.006MHz

Scout Primary

146.400MHz

Propagation Telemetry

Ridge Line

92%

Gorge Floor

18%

Sector Relay: Sector Alpha Relay• 12-18 KM Range

Regulatory Compliance

VHF/UHF frequencies are for monitoring and emergency coordination only. Transmitting on these bands may require an Amateur Radio License or regional government permits. Check local telecommunications laws before operation.

Technical Analysis

Total Ascent

+1280 m

Total Descent

-56 m

Ruggedness Index

Terrain Roughness Index

Vertical displacement per km. Typical range: 0 (Smooth) to 100+ (Extreme Mountain).

0 (Smooth)50 (Steep)100+ (Extreme)

65.2

Tortuosity Index

Route Curviness Index

Ratio of actual path to straight line. Typical range: 1.0 (Direct) to 3.0+ (Switchbacks).

1.0 (Direct)2.0 (Winding)3.0+ (Serpentine)

2.16

Gradient Distribution

Flat (0-3%)10%

Moderate (3-8%)28%

Steep (>8%)62%

Surface & Hydrology

Paved99%

Unpaved1%

Surface Spectrum Analysis

Asphalt

99%

Dirt Track

Water Crossings

Includes only technical water fords where the vehicle actively enters a stream or riverbed. Permanent bridges are excluded from this count.

Difficulty Analysis

SCORE: 61

Difficulty is determined by a technical multi-vector analysis of elevation profile, surface quality, and topographic intensity.

Resulting CategoryHard

Bounding Box (WGS84)

MIN LAT: 45.690025

MAX LAT: 45.717899

MIN LON: 6.574511

MAX LON: 6.690575

Point Spacing: 15.8 m • Engine: TrailX Precision GPX ANALYTICS v1.0.0

Reviews & Discussion0

Expedition notes, route modifications, and surface updates shared by the community.

Log Expedition Notes

You must be signed in to contribute reviews

Authenticate Identity

Be the first to review

No reviews registered for this technical sector yet. Share your experience, surface observations, or gear recommendations!

Plan this trip

Before you go: Cormet de Roselend

Best time to go

Apr, May, Jun, Sep, Oct

Mid-June to mid-September is the season for high Alpine routes such as the Tour du Mont Blanc; huts are generally open then and passes are mostly clear of snow. Lower routes around Lyon and the Drôme are good in spring and autumn.