Paso de Piedra cycling climb profile
Paso de Piedra is an HC climb in Mexico, and the classification makes sense when you look at the basic shape of the effort. The road rises from 801 m to 2441 m across 24.6 km, gaining 1640 m net with 1670 m of total ascent. That tells you the main story before you even look at the maximum gradient: this is not a climb won by surviving one short wall. It is a long, sustained altitude gain where small pacing errors compound.
The average gradient of 6.67% is the key number, because over this distance it points to a climb that keeps asking for pressure on the pedals rather than offering long recovery. The total ascent is only 30 m greater than the net elevation gain, which suggests the route is overwhelmingly uphill rather than a sawtooth profile with repeated descents. In practical terms, expect the climb to feel more like a prolonged aerobic and muscular load than an irregular punch-and-recover effort.
How the gradient rides
With only the headline profile available, the safest reading is that Paso de Piedra unfolds as a long accumulation of climbing from bottom to summit. The 6.67% average is demanding but manageable if ridden under control. The problem is the stated maximum gradient of 14.94%. A ramp like that can turn a steady tempo ride into a forced over-threshold effort if you arrive overgeared or already close to your limit.
That contrast matters tactically. On a climb this long, the average gradient sets the pacing plan, but the maximum gradient sets the gearing requirement. You need to be able to ride the sustained grade efficiently while still having a low enough gear to absorb the steepest sections without spiking torque and heart rate.
Pacing and gearing notes
Treat the lower slopes as the first part of a long calculation, not an invitation to ride on feel. If you pace by power, sit below your sustainable climbing ceiling early and let the effort build only once the vertical gain starts to shrink. Riders using /glossary/ftp as a reference should avoid turning the first half into a threshold test, because the final cost of this climb is created by duration as much as gradient.
For gearing, prioritize cadence preservation. The average grade is not extreme on paper, but a 24.6 km climb with ramps up to 14.94% will expose any setup that only works on steady mid-grade roads. A compact or similarly low climbing gear makes sense for most riders, especially if the goal is to ride the full climb smoothly rather than alternate between seated grinding and recovery soft-pedaling.
The winning approach is boring in the best way: settle early, keep the torque under control, respect the steep ramps, and let the climb come back to you near the summit.