Passo del Gotro

Overview

Passo del Gotro is a long, sustained category-1 ascent that rewards patience over punch. From a valley floor at 669 m, the road grinds upward for 19.6 km to a summit at 1681 m — a net gain of 1012 m over the full distance. At an average gradient of 5.17%, none of it looks intimidating on paper, but the sheer length turns a moderate slope into a serious effort. This is a climb measured in time in the saddle rather than in short, explosive moments.

How the Gradient Unfolds

The defining feature here is consistency broken by occasional bite. With a 5.17% average stretched across nearly twenty kilometres, the Gotro rarely lets you settle into a rhythm and then abandon focus — the road keeps tilting up, kilometre after kilometre. The steepest pitch reaches 11.45%, more than double the average, so expect the gradient to swing well above the mean on the harder ramps and ease back below it on the recovery sections. Note too that the total ascent of 995 m sits just under the 1012 m net gain, which tells you the profile is almost entirely uphill with very little false-flat or descent to break it up. There is nowhere to truly coast; the climb simply varies its steepness rather than releasing you.

Pacing Notes

Length is the challenge, so pace this like a sustained tempo effort rather than a series of attacks. A good rule of thumb is to hold your first few kilometres a touch under threshold, leaving headroom for the 11.45% ramps that will spike your power involuntarily. Knowing your FTP is the key to getting this right: it lets you translate the 5.17% average into a wattage target you can defend for the better part of an hour. If you have not tested recently, run the numbers through the FTP estimator before you commit to a target. On a climb this long, going two or three percent too hard early costs you far more in the final kilometres than it gains you at the bottom.

Gearing

With 1012 m to gain and pitches touching 11.45%, gear low and gear early. For most riders, a compact 34-tooth chainring paired with at least a 34×32 cassette gives enough range to spin the steeper ramps without grinding. If you carry any fatigue, or if you weigh toward the heavier end, step up to a 34×34 — that extra sprocket keeps your cadence alive when the gradient jumps and protects your legs across the long middle third. On a climb defined by duration, the easiest gear you have is almost always the smart choice.

Summary

Passo del Gotro is a test of steady power and patience: nearly twenty kilometres of near-constant climbing with just enough steep punctuation to keep you honest. Pace it conservatively, gear low, and let the 5.17% average do the work over time rather than fighting it.

Length: 19.6 km
Average gradient: 5.17%
Max gradient: 11.45%
Start: 669 m
Summit: 1681 m
Net gain: 1012 m
Total ascent: 995 m
Category: 1