Passo Coca

Overview

Passo Coca is a hors catégorie climb that gives you nowhere to hide. Over 14.2 km it averages 11.5%, hauling you from a start elevation of 307 m to a summit of 1940 m. That is 1633 m of net elevation gain, with 1549 m of total ascent packed into a road that rarely relents. An average gradient in double digits over this distance is exceptional — most HC climbs sit several points lower — so treat Coca as a discipline test more than a scenic outing. The 32.09% maximum gradient tells you the story: this is a wall, and it will find your weakest gear.

How the Gradient Unfolds

The headline number is the 11.5% average, but averages flatten the truth. To gain 1633 m across 14.2 km, the road has to hold a punishing slope almost continuously, and the 32.09% maximum spike means there are pitches that briefly more than double the average. Expect the climb to feel like a long series of steep ramps with almost no genuine recovery. Because total ascent (1549 m) sits just below net gain (1633 m), there is essentially no descending or false-flat relief — every metre of forward progress is a metre upward. Mentally, break the 14.2 km into thirds and judge yourself only against the section you are in, never the summit.

Pacing Notes

On a climb this steep and this long, pacing is everything. Ride the first few kilometres well within yourself; the 11.5% average will punish anyone who starts hot. Anchor your effort to your FTP and hold a sustainable percentage of it — on gradients that touch 32.09% you will unavoidably spike above threshold on the steepest ramps, so bank margin everywhere else to absorb those surges. If you do not know your threshold, run the numbers through the FTP estimator before you go, then target a wattage you can defend for the full 14.2 km rather than one that feels comfortable at the base.

Gearing

Do not under-gear this climb. With an 11.5% average and a 32.09% maximum, a compact 34-tooth front paired with at least a 34×32 is the practical minimum, and most riders will be far happier on 34×34. If your cassette or derailleur allows even more range, take it — the extra cog is cheap insurance against the ramps that spike toward the maximum, where cadence collapses and you risk grinding to a standstill. Gaining 1633 m at this slope rewards spinning a low gear over muscling a tall one; protect your legs early so you still have something left for the steepest pitches near the top.

Summary

Passo Coca is a true HC monster: 14.2 km at 11.5% average with a 32.09% wall, lifting you 1633 m from valley to summit. Pace it conservatively, gear it generously, and respect the numbers.

Length: 14.2 km
Average gradient: 11.5%
Max gradient: 32.09%
Start: 307 m
Summit: 1940 m
Net gain: 1633 m
Total ascent: 1549 m
Category: HC