Alto del Morro

Alto del Morro cycling climb profile

Alto del Morro is a category 2 climb in Colombia that asks more for discipline than brute force. On paper, the headline is manageable: 15.9 km at an average gradient of 4.79%. But the important detail is the relationship between that average and the maximum gradient of 9.64%. This is not a climb where the road simply sits at one rhythm from bottom to top. The average is moderate, but the steepest ramps are close to double that figure, which means the effort will become uneven if you let each pitch dictate your pacing.

The climb starts at 1,674 m and tops out at 2,433 m, gaining 759 m net elevation. The total ascent is 778 m, only slightly higher than the net gain, which suggests the road is predominantly uphill rather than broken by major descents. That matters tactically. There is not much implied opportunity to recover through meaningful downhill sections, so the safest approach is to treat the whole climb as one sustained aerobic effort with short interruptions from steeper ramps.

How the gradient rides

The 4.79% average points to a climb that can be ridden seated for long periods by a well-paced rider. It is steep enough to keep pressure on the pedals, but not so steep that it forces constant low-cadence grinding. The danger is psychological: because the average looks controlled, it is easy to ride the lower-gradient sections too hard, then arrive at the 9.64% ramps already carrying fatigue.

A better read is to separate the climb into two demands:

• The base effort: a long, steady climb requiring consistent aerobic output over 15.9 km.
• The ramp management: short steeper sections where gearing and restraint matter more than aggression.

That gap between average and maximum gradient is the defining feature. If you ride Alto del Morro by feel alone, the easier pitches will invite overpacing and the steeper ones will punish it.

Pacing and gearing notes

Start below your target climbing effort, especially if using /glossary/ftp as a pacing anchor. With 759 m of net gain ahead, the first priority is keeping the effort smooth enough that the upper part of the climb is still controllable.

For gearing, do not be fooled by the moderate average. A setup that feels comfortable on a 4.79% grade may become marginal when the road reaches 9.64%. Choose a low enough gear that you can stay seated and keep pressure even through the steepest ramps without having to surge above sustainable effort.

The best execution is conservative early, steady through the middle, and responsive near the summit. If the legs are still good late, that is when Alto del Morro rewards increased pressure. If you spend that matchbook early, the climb becomes a slow grind long before 2,433 m.