Paso de las Nubes

Paso de las Nubes cycling climb profile

Paso de las Nubes is a short, hard category 1 climb in Argentina that asks for control from the first meaningful pedal stroke. The climb runs for 7.2 km, rising from 352 m to 1029 m, with a listed net elevation gain of 677 m. The defining number is the average gradient: 9.39 percent.

That tells you most of what matters. This is not a climb where the difficulty comes from one isolated wall or a late sting. With a maximum gradient of 10.89 percent sitting only modestly above the average, the profile points to a sustained, compressed effort where the baseline is already steep. There may be small variations in feel, but the climb's character is pressure rather than surprise.

How the gradient unfolds

The key feature is the narrow gap between the average and maximum gradients. On a climb averaging 9.39 percent, any easing is unlikely to feel like real recovery because the overall demand remains high across the full 7.2 km. The road does not need to spike dramatically to hurt. It hurts because the gradient stays close enough to threshold territory that momentum is expensive to rebuild.

This makes Paso de las Nubes a pacing climb more than a rhythm climb. Riders who surge early, chase speed, or stand too often will pay for it because there is not much gradient relief implied by the profile. The summit at 1029 m comes after a large amount of vertical gain packed into a relatively short distance, so the effort is closer to a sustained climbing test than a rolling mountain road.

Pacing and gearing notes

The practical approach is simple: start below what feels natural. On a 9.39 percent average grade, perceived effort can lag behind actual cost in the opening minutes, especially if fresh legs tempt you into pushing over /glossary/ftp. Treat the first section as a control phase, then let the effort rise only once the climb has settled.

Gearing should be chosen for cadence preservation, not pride. Because the maximum gradient is 10.89 percent, you need a low enough gear to stay seated through steep sections without grinding. If your easiest gear only works when you are fresh, it is not low enough for this climb.

A sensible pacing structure:

• Open conservatively and avoid early anaerobic spikes
• Hold a steady seated rhythm through the main body of the climb
• Use standing only to reset the legs, not to force speed
• Save the hardest effort for the final portion, when the remaining distance is manageable

Paso de las Nubes rewards restraint. The numbers describe a climb with sustained density: not exceptionally long, but steep enough throughout that every overreach compounds. Ride it patiently, keep the torque under control, and the final kilometres become a hard but manageable extension of the same effort rather than a collapse into survival.