Paso de las Tórtolas

Paso de las Tórtolas cycling climb profile

Paso de las Tórtolas is an HC climb in Chile that asks a very simple question in a very hard way: can you keep producing controlled power for 30 km while gaining 2,772 m from a start elevation of 2,399 m to a summit elevation of 5,171 m.

The headline number is the 9.24% average gradient. On a climb this long, that is not just steep - it is structurally demanding. A short climb can hide behind a high average because the effort is over quickly. Here, the average is the baseline load for a prolonged ascent, which means pacing errors compound. If the first part feels manageable, that is not a signal to press. It is the cost of entry.

How the gradient unfolds

The supplied profile does not give segment-by-segment gradient changes, so the safest way to read the climb is through its overall shape: 30 km of climbing with enough vertical gain to average 9.24% all the way to the summit. That tells you the road cannot be treated as a sequence of isolated ramps. The climb is defined by sustained resistance.

The maximum gradient of 35.4% changes the practical interpretation. Even if that steepest section is brief, it means the climb contains gradients that can force a rider out of a smooth seated rhythm. The danger is not only the spike itself. It is what the spike does to pacing. A rider who is already riding above threshold before the steepest pitches arrives will have very little margin left.

Pacing and gearing notes

Treat Paso de las Tórtolas as a long threshold-management problem, not a climb to attack early. The correct opening effort should feel almost conservative, especially because the summit sits at 5,171 m. The start elevation of 2,399 m also means the climb begins high enough that effort control matters from the first pedal strokes.

Use gearing that lets you stay seated at a controlled cadence on gradients well above the 9.24% average. The 35.4% maximum makes low gearing non-negotiable for most riders. If your easiest gear only works when fresh, it is not enough for this climb.

A practical pacing frame:

• Ride the first section below your target climbing effort, not at it.
• Keep power anchored to sustainable output rather than chasing speed.
• Save standing efforts for the steepest ramps, not for acceleration.
• Expect the climb to punish surges more than it rewards them.

If you are using power, anchor the ride around a realistic percentage of /glossary/ftp and leave room for the steepest pitches. The decisive factor is not peak strength. It is whether you can keep the effort controlled long enough that the final kilometers are still ridden, not survived.