Alto de Las Cuchillas

Alto de Las Cuchillas cycling climb profile

Alto de Las Cuchillas is a category 1 climb in Colombia built around duration more than brutality. The headline numbers are clear: 22.9 km at an average gradient of 5.23%, rising from 1038 m to 2237 m for a net elevation gain of 1199 m. That makes it the kind of climb where the decisive factor is not whether you can survive a single steep ramp, but whether you can keep producing controlled power for a long time without letting the effort drift above sustainable range.

The maximum gradient is 9.43%, which matters less because it is extreme and more because it changes how the climb should be paced. A climb averaging just over 5% with ramps approaching 10% rewards riders who can absorb short increases in torque without surging too hard. If you ride every steepening as an attack, the back half of the climb will expose it.

How the gradient unfolds

With the start at 1038 m and the summit at 2237 m, the climb is essentially a long upward drag into higher ground. The listed total ascent of 1188 m sits very close to the net elevation gain of 1199 m, which points to a profile that should be treated as sustained climbing rather than a stair-step route with meaningful descents. Practically, that means there are unlikely to be many free recoveries. Even when the road eases, the climb is still asking for pressure on the pedals.

The average gradient of 5.23% suggests a climb that can feel manageable early, especially if ridden on fresh legs. That is the trap. Over 22.9 km, a moderate gradient becomes physiologically expensive because the effort is continuous. The ramps up to 9.43% are where pacing mistakes compound: a rider already sitting too close to threshold will have to either grind at low cadence or spike well above target power.

Pacing and gearing notes

The right approach is conservative and steady. Settle into an effort below your /glossary/ftp early, then let the climb come to you. The opening goal should be restraint, not speed. If the gradient bites later, you want enough margin to lift power briefly without turning the final kilometres into damage control.

Gearing should be chosen for cadence protection. The climb is not defined by savage maximum gradients, but the 9.43% steepest pitch is enough to punish an overgeared setup after a long approach. A compact or climbing-oriented gear range makes sense if your aim is to keep torque smooth rather than muscle through the ramps.

For training, Alto de Las Cuchillas is best understood as a sustained aerobic-threshold-to-threshold test. Riders using a /tools/ftp-estimator or power targets should think less about peak power and more about durability: can you hold a disciplined output for the full 22.9 km while managing the sections that approach double-digit gradient? That is the real demand of the climb.