Colle San Bernardo di Mendatica

Overview

Colle San Bernardo di Mendatica is a category 1 climb that asks for genuine respect. Over 12.1 km it averages 7.64%, lifting you from a start elevation of 353 m to a summit of 1279 m. That is 926 m of net elevation gain, with a total ascent of 901 m once the minor undulations are accounted for. The average alone tells you this is no rolling warm-up: 7.64% sustained across more than twelve kilometres is the kind of number that separates a steady day from a survival day. The steepest pitch touches 14.87%, so there are moments where the road stands up sharply and forces you out of any comfortable rhythm.

How the Gradient Unfolds

The story of this climb is written in the gap between the 7.64% average and the 14.87% maximum. A gradient that averages this high with a peak roughly double it means the difficulty is not evenly spread. Expect stretches that hover near or above the average, punctuated by ramps that spike well into double digits. Because the total ascent of 901 m sits just under the 926 m of net gain, the climb barely gives anything back — there is almost no descending or false flat to recover on. It simply keeps pointing upward. Treat every section at or below 7.64% as a chance to breathe, and brace for the harder pitches rather than being surprised by them.

Pacing Notes

On a 12.1 km effort at 7.64%, pacing discipline decides your day. The single biggest mistake is chasing the early ramps and paying for it near the 1279 m summit. Anchor your effort to your FTP and hold something close to a sustainable threshold on the average gradient, leaving headroom to absorb the 14.87% spikes without redlining. If you do not know your threshold number, run the numbers through the FTP estimator before you ride so your power targets reflect reality. Aim to arrive at the base of the steepest ramps with reserves in hand — over 926 m of climbing, the difference between even pacing and a blow-up is often several minutes.

Gearing

With a 7.64% average dragging on for 12.1 km and pitches reaching 14.87%, gearing is your friend. A compact chainring paired with a wide-range cassette is the sensible baseline. A 34×32 will get most fit riders up the sustained sections, but on the 14.87% ramps — especially late, after 926 m of accumulated fatigue — a 34×34 gives you the extra spin to keep the cadence civilised and the knees intact. If your bike can take it, favour the easier ratio; nobody regrets one gear too many on a category 1 climb.

Summary

Colle San Bernardo di Mendatica is a relentless, honestly steep category 1 test: 12.1 km at 7.64%, with ramps to 14.87% and almost no respite across 926 m of ascent. Pace it to your threshold, gear low, and let the summit come to you.

Length: 12.1 km
Average gradient: 7.64%
Max gradient: 14.87%
Start: 353 m
Summit: 1279 m
Net gain: 926 m
Total ascent: 901 m
Category: 1