Paso de la Deidad

Paso de la Deidad cycling climb profile

Paso de la Deidad is defined less by one brutal wall than by accumulation. At 37.8 km with an average gradient of 5%, it asks for the kind of effort that can feel manageable early and expensive later. The climb starts at 2405 m and tops out at 4297 m, gaining 1892 m from bottom to summit, with 1919 m of total ascent.

That small gap between net gain and total ascent is important. It suggests this is not a climb with repeated descents or meaningful recovery valleys. Once the road begins rising, the work is essentially continuous. For pacing, that matters more than the average gradient alone. A 5% climb with long interruptions rides very differently from a 5% climb that keeps pressing upward for nearly 38 km.

How the gradient unfolds

The headline gradient is moderate, but the climb's shape is still demanding because of duration and altitude. The maximum gradient is 9.44%, so the hardest pitches are sharp enough to force a change in rhythm, but not so steep that the climb becomes a pure low-cadence survival test. The likely challenge is holding steady power through long stretches, then absorbing the steeper ramps without repeatedly crossing too far above threshold.

Because the summit sits at 4297 m, the upper part should be treated with respect even if the road never turns violently steep. At that elevation, the same pace that felt controlled lower down can become harder to sustain. This is where riders who paced the opening half too aggressively often pay twice: first from the duration, then from the reduced margin near the top.

Pacing and gearing notes

The right approach is conservative early. On a climb this long, the first priority is not proving you can ride the average gradient - it is preventing small over-efforts from compounding. Ride the opening section below your limit, especially if you are pacing by /glossary/ftp, and save the harder efforts for the ramps closer to the top.

Gearing should be chosen for cadence control rather than just the average 5%. The 9.44% maximum means you need enough low gear to stay smooth when the gradient tightens, particularly late in the climb when fatigue and elevation both reduce your ability to muscle through. If your easiest gear only feels comfortable at 5%, it is not really adequate for this climb.

Paso de la Deidad earns its HC label through length, elevation gain, and altitude rather than savage gradients. The winning strategy is patience: lock into sustainable pressure, avoid chasing short-term speed, and treat every steeper ramp as something to manage, not attack.