Alto del Diablo

Alto del Diablo cycling climb profile

Alto del Diablo is a category 3 climb in CO that asks for sustained control rather than brute-force climbing. The headline numbers are manageable - 7.3 km at an average gradient of 4.52% - but that is exactly why it can catch riders out. A climb like this rarely forces an immediate selection through gradient alone. Instead, the damage comes from riding slightly above target for too long because the road feels rideable.

The climb starts at 99 m and tops out at 429 m, giving a net elevation gain of 330 m. That vertical gain is spread over enough distance that the ascent should feel more like a prolonged aerobic drag than a steep mountain pass. The maximum gradient is 6.98%, which tells you the hardest sections are firm but not severe. There is no need to treat Alto del Diablo like a climb with wall-like ramps. The better approach is to ride it as a controlled tempo effort with enough reserve to absorb the steeper pitches without changing the whole character of the effort.

How the gradient shapes the ride

With the average at 4.52% and the maximum just under 7%, the profile points to a climb that stays within a relatively narrow climbing range. That matters tactically. On steeper climbs, gearing and body weight dominate the experience. Here, rhythm, cadence discipline, and power control matter more because the gradients are low enough to tempt riders into pushing a gear that is too large.

The danger is not one decisive ramp. It is the accumulation of small over-threshold efforts. If you ride the opening kilometres as if the average gradient makes the climb easy, the later part will feel much heavier than the profile suggests.

Pacing and gearing notes

Start below your target climbing effort, especially if you are pacing by /glossary/ftp. The climb is long enough that an aggressive first section can create a slow fade, but not steep enough to naturally force you into a conservative rhythm.

Use a gear that lets you keep cadence smooth when the road rises toward the 6.98% maximum. If you are grinding early, you are already spending more muscular energy than the climb requires. Stay seated where possible, keep pressure even through the pedals, and save standing efforts for brief resets rather than sustained accelerations.

For stronger riders, Alto del Diablo is a good place for a steady threshold-style effort. For endurance riders, it is better treated as a disciplined tempo climb: controlled at the bottom, patient through the middle, and only lifted near the summit if the legs are still responding.