Alto de Los Leones

Alto de Los Leones cycling climb profile

Alto de Los Leones is a category 2 climb that asks for controlled, steady climbing rather than a single explosive effort. The headline numbers are clear: 8.1 km in length, 528 m of net elevation gain, and an average gradient of 6.5% from a start elevation of 1626 m to a summit elevation of 2154 m.

That combination matters. A climb of this length is long enough that pacing errors in the opening phase can become expensive before the summit, but the average gradient is still rideable if the effort is kept disciplined. The danger is the maximum gradient of 11.13%. Since that is well above the 6.5% average, the climb should not be treated as a perfectly even drag. The numbers point to a profile where steeper ramps are likely to interrupt the rhythm, and those are the sections that will punish riders who start above threshold.

How the gradient unfolds

The available profile does not break Alto de Los Leones into lower, middle, and upper sectors, so the smart reading is to use the full-climb metrics rather than invent a kilometre-by-kilometre story. From bottom to summit, the climb gains 528 m over 8.1 km, which gives it a sustained climbing character. There is not enough distance for long recovery to erase a bad pacing choice, and there is enough elevation gain for fatigue to accumulate steadily.

The practical implication is simple: ride the early part as if the hardest pitch is still ahead. A 6.5% average can feel manageable when fresh, especially at the bottom, but the 11.13% maximum means there is at least one section where torque demand rises sharply. If you have already drifted too far above your sustainable effort, those ramps become damage control instead of forward progress.

Pacing strategy

For a measured ascent, anchor the first half below your limit and let the gradient dictate where effort rises. This is not a climb to attack every steepening. It is better to keep pressure on the pedals, absorb the steeper sections without spiking too hard, then build toward the summit once the main elevation gain is already banked.

Use perceived effort alongside power. If riding with a power meter, this is the kind of climb where /glossary/ftp discipline matters: the average gradient encourages tempo, but the maximum gradient invites over-pacing. If you do not know your current benchmark, use /tools/ftp-estimator before setting targets for the effort.

Gearing notes

Choose a gear setup that leaves a genuine bailout option for gradients above 11%. The average gradient is not extreme, but the steepest ramps are steep enough that riding an overgeared setup will force low-cadence grinding, especially late in the climb. A compact climbing gear is the safer choice if the goal is an even effort rather than a series of muscular surges.

The best way to ride Alto de Los Leones is to respect the mismatch between the average and maximum gradient. Treat the 6.5% average as the baseline workload, and the 11.13% maximum as the reason to hold something back.