Col de la Golette

Overview

The Col de la Golette is a genuine hors catégorie test — the kind of climb that rewards respect and punishes ambition. Over 14.5 km it averages 10.51%, hauling you from a start elevation of 463 m to a summit at 1989 m. That is 1526 m of net elevation gain, with 1469 m of total ascent packed into a road that almost never relents. For context, an average above 10% sustained across nearly fifteen kilometres puts this in the upper tier of paved climbing anywhere. There is no warm-up spur and no false flat to hide behind; the difficulty is baked into the numbers from the first ramp.

How the Gradient Unfolds

The defining feature here is consistency of severity rather than a single wall. A 10.51% average over 14.5 km means the "easy" sections are still hard — a stretch at 8% here feels like recovery only because the surrounding gradient is worse. The steepest measured pitch hits 25.67%, more than double the average, so expect at least one section where the road kicks up viciously and cadence collapses. Because net gain (1526 m) exceeds total ascent (1469 m), the profile trends relentlessly upward with negligible respite — you are climbing essentially the whole way. Break the 14.5 km into thirds and treat each as its own effort; fixating on the full distance at this gradient is demoralising.

Pacing Notes

On a climb this steep and this long, pacing discipline decides everything. Anchor your effort to FTP and hold a sustainable power well below threshold on the lower slopes, because the 25.67% pitch will demand a surge you cannot afford to have pre-spent. If you do not know your number, run the FTP estimator before you attempt the Golette so you can set realistic targets. A 10.51% average means gravity, not the wind, is your opponent, so ride to power and cadence rather than speed — your km splits will look slow, and that is fine. Fuel early and often; at this gradient, an effort lasting well over an hour is likely for most riders, and bonking on a wall this steep ends the day.

Gearing

Do not under-gear this one. For an HC climb averaging 10.51% with ramps to 25.67%, a compact 34-tooth chainring paired with a wide cassette is the sensible minimum. A 34×32 will get strong climbers over the summit, but on the steepest pitches you will be grinding at low cadence. Most riders will be far happier with 34×34, which preserves enough spin to keep torque manageable through the 25.67% section and protects the knees across 1526 m of climbing. If your bike accepts a larger cassette or a sub-compact crank, take it — spare gears cost nothing and buy you survival.

Summary

The Col de la Golette is a pure HC grind: sustained, steep, and unforgiving from bottom to top. Pace to power, gear low, and fuel early, and the 1989 m summit is well within reach.

Length: 14.5 km
Average gradient: 10.51%
Max gradient: 25.67%
Start: 463 m
Summit: 1989 m
Net gain: 1526 m
Total ascent: 1469 m
Category: HC