Alto de Santa Teresa

Overview

Alto de Santa Teresa is a Category 1 climb that rewards patience over panic. Over 15.1 km it lifts you from 1115 m to a summit at 1897 m, a net gain of 782 m. The average gradient reads 5.17%, which sounds forgiving until you factor in the length and the altitude: this is a long haul at elevation, and the total ascent of 792 m confirms there is barely any respite to coast through. With a max pitch of 11.98%, the climb has a sting it can deliver at any moment. This is a tempo climber's road, not a puncheur's playground.

How the Gradient Unfolds

The headline number, 5.17%, is best read as an average that hides variety rather than a steady ramp. The gap between the 792 m of total ascent and the 782 m of net gain is small, which tells you there are almost no descents or flat recovery kilometres to break your rhythm. Instead the road tilts up and holds. The 11.98% maximum is more than double the average, so expect the gradient to swing well above the mean on the steeper ramps before easing back toward the middling middle. Treat the mellow 5.17%-ish stretches as opportunities to bank momentum, because the steep pitches will claw it back.

Pacing Notes

On a climb this long, pacing discipline matters more than raw strength. Ride the first few kilometres a touch below what feels comfortable — the 15.1 km will find you if you overcook the start. Anchor your effort to your FTP: a Category 1 ascent of this length is typically best ridden just under threshold, letting your heart rate settle into a sustainable tempo rather than surging on every ramp. When the gradient spikes toward 11.98%, absorb it by shifting down and holding cadence instead of standing and forcing watts. If you are unsure of your threshold, run the numbers through the FTP estimator before you plan your target power. Save a small reserve for the upper slopes near 1897 m, where thinner air quietly taxes your legs.

Gearing

Gearing is where you buy yourself an easier day on Alto de Santa Teresa. Given the 15.1 km length and the 11.98% max gradient, you want low ratios in reserve so you are never grinding a gear you cannot turn. A compact chainring paired with a wide-range cassette is the sensible baseline. A 34×32 will get most fit riders over the steeper ramps while keeping cadence respectable on the sustained 5.17% sections. If you are carrying fatigue, riding at altitude, or simply prefer to spin, step up to a 34×34 for extra insurance on the pitches that flirt with 11.98%. The taller your comfortable cadence, the fresher you will arrive at the 1897 m summit.

Summary

Alto de Santa Teresa is a long, honest Category 1 climb: 15.1 km, a 5.17% average, and a 782 m net gain to a summit at 1897 m. Pace it with restraint, gear it generously, and let the steady 5.17% tempo carry you to the top rather than the 11.98% ramps breaking you on the way.

Length: 15.1 km
Average gradient: 5.17%
Max gradient: 11.98%
Start: 1115 m
Summit: 1897 m
Net gain: 782 m
Total ascent: 792 m
Category: 1