Col de Menthières

Overview

Col de Menthières is a Category 2 climb in France stretching 14 km from base to summit, gaining 653 m in net elevation. Those numbers suggest a manageable day out — an average gradient of 4.66% rarely sends alarm bells ringing. What the averages hide is a maximum gradient of 32.11%, one of the more savage single-pitch figures you'll encounter on any categorised climb. The total ascent of 1,214 m against a net gain of 653 m tells you something important before you even clip in: the road gives back a significant portion of what it takes, meaning descents or gradient reversals are built into the profile. This is not a steady grind. It is a rhythm-breaking climb that demands careful reading.

How the Gradient Unfolds

The gap between the 4.66% average and the 32.11% maximum is enormous — nearly 27 percentage points. That kind of spread signals a climb structured around sharp, localised ramps embedded in otherwise moderate terrain. Expect extended sections that feel almost comfortable, followed by abrupt walls that can strip momentum in seconds.

The total ascent figure of 1,214 m against a net gain of 653 m confirms the road loses height at least once during the 14 km. This means:

• False flats or descents mid-climb that tempt you into pushing harder than necessary
• Renewed climbing after recovery sections, which resets the muscular demand just when legs are expecting easier ground
• The steepest ramps likely appear discretely, not as a single sustained wall but as punchy kicks that can exceed 30% locally

Riders who treat the entire climb as one uniform effort will either blow up on the steep sections or leave too much in reserve on the moderate ones.

Pacing Strategy

With an average gradient of 4.66% across 14 km, a steady FTP-based approach is viable for the majority of the climb — but the 32% maximum demands that you pre-plan your effort around those ramps rather than react to them.

Key principles:

• Hold back on the easier lower gradients. The temptation to push on moderate terrain is strong, but accumulated fatigue will cost you dearly when a 30%+ ramp arrives unexpectedly.
• Don't chase the descent sections. If the road flattens or dips mid-climb, resist the urge to accelerate. Use any downhill to spin the legs out and lower heart rate.
• Attack the steep ramps in a seated, controlled position where possible. Standing through a 30%+ pitch is inevitable, but stay smooth — spiking power too aggressively leads to oxygen debt that compounds through the remaining kilometres.
• Recalibrate after each ramp. Once the gradient eases, return to your target power or perceived exertion rather than continuing to push from the momentum of the previous effort.

Use the FTP Estimator to establish a realistic power ceiling before attempting this climb at race pace.

Gearing Notes

A 32.11% maximum gradient is not something to underestimate with a standard road groupset. If you are on a compact chainset (50/34), you will want a rear cassette with at least a 32-tooth sprocket, and a 34-tooth option is strongly advisable if the steepest ramps are sustained for more than a few pedal strokes. Riders on semi-compact or standard setups should seriously consider whether their lowest gear allows a cadence above 60 rpm at the maximum gradient.

Gravel-oriented gearing — wide-range cassettes in the 11-42 or 11-46 range paired with a 1x drivetrain — removes all anxiety from the steep sections and lets you focus entirely on pacing rather than survival.

Bottom Line

Col de Menthières reads as a mid-range Category 2 on paper. In practice, the 32.11% maximum gradient and the undulating total ascent profile make it a climb that rewards experience, restraint, and appropriate gearing over raw fitness. Respect the averages, but plan your ride around the outliers.