Alto del Mico

Alto del Mico cycling climb profile

Alto del Mico is an HC climb in Colombia built around one simple problem: duration. At 23.8 km, it is long enough that the average gradient of 6.56% becomes more important than it first appears. This is not a short wall where a rider can absorb the damage and reset. The climb asks for a controlled effort from the bottom at 987 m all the way to the summit at 2,547 m.

The headline number is the 1,560 m of net elevation gain. The supplied profile also lists 1,551 m of total ascent, which points to a route that is essentially uphill throughout, with little meaningful relief. That matters tactically. On a climb with major descents or flat benches, a rider can spend matches and recover. Alto del Mico gives far fewer places to hide.

How the gradient rides

The average gradient tells you the climb is persistently hard, but the maximum gradient of 17.11% is the number that should shape the pacing plan. The profile data does not locate that steepest pitch, so the safest reading is that a rider must be prepared for severe ramps at some point inside a long, already demanding effort.

That combination is what makes the climb difficult. A 6.56% average over 23.8 km is already a threshold-management exercise. Add pitches above 17%, and the cost of poor pacing rises quickly. If the steep sections are attacked too hard, the rider is forced above sustainable power, burns through limited anaerobic capacity, and then still has a long climb left to finish.

In practical terms, the climb should be ridden as a steady aerobic effort with space reserved for the steepest gradients. The fastest ride here is unlikely to come from chasing every ramp. It comes from keeping the main body of the climb controlled, then allowing short rises in power only when the road demands it.

Pacing and gearing notes

Start below the effort you think you can hold. The length makes early overpacing expensive, especially because the summit sits 1,560 m above the start. A rider pacing by /glossary/ftp should think in terms of sustainable climbing power first, not maximum response to each pitch.

Gearing should be conservative. The 17.11% maximum gradient means riders need a low enough gear to stay seated and keep cadence from collapsing when the road steepens. If the easiest gear is only comfortable at the average gradient, it is not low enough for the hardest parts of Alto del Mico.

The key is patience. Treat the opening as the setup, not the selection. Hold back enough to absorb the steepest ramps without spiking too deeply, then use the final portion only if the effort is still under control. For riders estimating targets before the climb, an /tools/ftp-estimator can help anchor the pacing plan, but the road will still reward discipline more than optimism.