Paso de la Lagunita

Paso de la Lagunita cycling climb profile

Paso de la Lagunita is an HC climb in Chile built around one defining problem: duration under pressure. The climb runs for 33.6 km at an average gradient of 7.22%, starting at 2209 m and reaching 4631 m. That combination makes it less about surviving a single steep ramp and more about managing a long, sustained load that keeps asking for power long after the early rhythm feels settled.

The headline average matters because 7.22% over 33.6 km is not passive climbing. It is steep enough that momentum rarely solves much, and long enough that any overreach early has time to become expensive. The max gradient of 13.66% adds the second problem: even if the climb is defined by its sustained average, there are pitches where cadence, gearing, and torque control become decisive.

How the gradient unfolds

The available profile gives the macro shape rather than a turn by turn breakdown: a 33.6 km ascent, 2422 m of net elevation gain, 2393 m of total ascent, and a maximum gradient of 13.66%. That means the safest way to read the climb is as a long high mountain effort with steep interruptions, not as a steady trainer style grade.

The average gradient can be misleading if it is treated as the effort target for every metre. A climb can average 7.22% and still force short sections that feel very different when they rise toward 13.66%. Those steeper ramps are where riders who have been riding slightly above themselves get exposed. If the legs are already loaded, the steepest sections stop being brief inconveniences and become forced anaerobic efforts.

The elevation range is also central to how this climb rides. Starting at 2209 m means the climb begins high, then continues to 4631 m. That does not change the road gradient, but it changes the cost of holding power. The upper part of the climb should be treated with respect even if the numbers on the road look similar to earlier sections.

Pacing and gearing notes

The correct pacing model is conservative first, controlled middle, and only opportunistic late. On a climb this long, the early kilometres should feel almost too measured. If you are using /glossary/ftp as a reference point, avoid turning the opening portion into a threshold test. The climb gives you 33.6 km to pay for that decision.

Gearing should be chosen for the max gradient, not the average. A setup that feels fine at 7.22% can become too large when the road reaches 13.66%, especially after prolonged climbing. Prioritise a gear that lets you keep pressure smooth rather than forcing low cadence surges. If you have to stand every time the grade bites, the gear is limiting your pacing options.

The practical rule is simple: ride the average, prepare for the maximum. Paso de la Lagunita rewards riders who keep the effort boring early, protect cadence on the steep sections, and arrive high on the mountain with enough control left to keep climbing rather than simply endure.