Alto de Palermo

Overview

Alto de Palermo is a Category 1 climb that asks a genuine, sustained effort of every rider who takes it on. Over 15.9 km it lifts you from a valley floor at 233 m to a summit at 1346 m — a net gain of 1113 m. The average gradient sits at 7%, which sounds civil until you learn that the climb hides a maximum pitch of 37.12%, a wall steep enough to stop an unprepared rider dead. This is a climb defined by its length and its spikes: long enough to erode your reserves, sharp enough to punish any lapse in gearing or pacing.

How the Gradient Unfolds

A 7% average across 15.9 km is deceptive. If the road climbed at a steady 7% the whole way, it would be a hard but rhythmic effort. Instead, the presence of a 37.12% maximum tells you the truth: the gradient is uneven, with mellower stretches that let you breathe offset by savage ramps that spike more than five times the average. Those pitches are where the climb is won or lost. Expect the road to pulse — sections where you settle into a cadence, then abrupt kicks where the front wheel feels like it wants to lift. The total ascent of 1101 m sits just below the 1113 m net gain, which tells you the route climbs almost continuously, with little to no descending relief to recover on.

Pacing Notes

On a climb this long, discipline early is everything. The first kilometres tempt you to push, but with over 1100 m of climbing ahead, restraint pays dividends. Anchor your effort to your FTP and aim to hold a sustainable percentage of it on the steady sections, keeping something in reserve for the ramps that spike toward 37.12%. On those walls, your power will surge well above threshold — that is unavoidable — so the goal is to keep the steady 7% stretches comfortably below your limit, banking the headroom you will spend on the steep pitches. If you are unsure where your threshold sits, run the numbers through the FTP estimator before you commit to a pacing plan. Ride the average, survive the maximum.

Gearing

Do not under-gear this climb. The 7% average is manageable on most setups, but the 37.12% maximum will overwhelm anything too tall. A compact chainset paired with a wide-range cassette is the sensible baseline. A 34×32 is the minimum most riders should consider here, and it will get you up the steady sections in reasonable shape. But given the severity of the steepest ramps and the 15.9 km of accumulated fatigue, a 34×34 is the smarter choice — that extra sprocket buys precious cadence exactly where the road turns vertical. When a pitch spikes past 30%, you will be grateful for every tooth. Err toward the easier gear; there is no prize for grinding.

Summary

Alto de Palermo is a proper Category 1 test: long, unrelenting, and punctuated by ramps that verge on the absurd. Pace it with respect for its length, gear it for its steepest pitches, and it rewards you with 1113 m of vertical and a summit at 1346 m.

Length: 15.9 km
Average gradient: 7%
Max gradient: 37.12%
Start: 233 m
Summit: 1346 m
Net gain: 1113 m
Total ascent: 1101 m
Category: 1