Alto de la Copa

Overview

Alto de la Copa is a long, high-altitude category 1 climb that asks for patience more than raw power. Over 18.9 km it lifts you from 2504 m to a summit of 3464 m, a net gain of 960 m at an average gradient of 5.08%. That average sounds gentle, and in isolation it is — but the climb starts high and finishes higher, so the thin air does as much damage as the slope. With a max gradient of 13.7%, the road is not uniform: there are ramps here that far exceed the tidy average, and knowing where the effort spikes matters.

How the Gradient Unfolds

Do the math on the profile and the story becomes clear. The net elevation gain is 960 m, but the total ascent is 1077 m — a difference of 117 m that never counts toward your summit. That gap tells you the road is not a single unbroken drag; it rolls, dips, and recovers along the way, meaning some of your climbing is repaid by short descents you then have to earn back.

The headline average of 5.08% is therefore a smoothed-out figure. The 13.7% max gradient is more than double that average, so expect the climb to breathe: mellow stretches where you can settle into a rhythm, punctuated by steeper pitches that force you out of the saddle or down a couple of cogs. On a climb this long, those transitions are where riders lose composure if they have not paced the flatter sections conservatively.

Pacing Notes

Altitude is the defining variable here. You begin at 2504 m and top out at 3464 m, so your usable power at the summit is meaningfully lower than what you'd hold at sea level. Treat your flatland FTP as a ceiling you will rarely touch up high — ride to feel and breathing, not to a number your legs remember from lower elevations. If you want a starting reference for your threshold before you adjust for altitude, run the numbers through the FTP estimator.

The practical plan: keep the 5.08% sections comfortably below threshold, bank nothing on the descents that create that 117 m of extra ascent, and save your matches for the pitches climbing toward 13.7%. Over 18.9 km, a metered effort that respects the thin air will beat a hot start every time.

Gearing

This is a climb where gearing buys you cadence, and cadence buys you oxygen efficiency. A compact 34-tooth chainring is the sensible front. On the cassette, a 34×32 is the minimum I'd bring — it keeps you spinning through most of the grade. But given the 13.7% max ramps combined with 3464 m of altitude, a 34×34 is the smarter insurance: that extra sprocket lets you hold a high cadence on the steepest pitches without redlining, which is exactly what you cannot afford this high up.

Summary

Alto de la Copa rewards the disciplined climber: a long, high, honest 18.9 km ascent where altitude sharpens a moderate 5.08% average into a real test. Pace the flats, respect the 13.7% pitches, gear low, and let the thin air set your ceiling.

Length: 18.9 km
Average gradient: 5.08%
Max gradient: 13.7%
Start: 2504 m
Summit: 3464 m
Net gain: 960 m
Total ascent: 1077 m
Category: 1