Puerto de Cotefablo

Overview

Puerto de Cotefablo is a Category 2 climb in Spain. It runs 9.9 km from a start elevation of 985 m to a summit at 1,582 m, for a net elevation gain of 597 m. On paper that is a moderate-length climb with a manageable average, but the profile is more demanding than those headline numbers suggest.

The gap between net gain and total ascent tells the real story. You climb 597 m net, but the total ascent is 1,035 m — an extra 438 m of climbing hidden in dips, rollers, and false flats along the way. That means you also give back roughly 438 m in short descents, so every metre of downhill you coast has to be re-earned. The climb undulates rather than rising cleanly, and that constant re-acceleration costs more than a steady grade of the same net height would.

How the Gradient Unfolds

The 6.02% average is misleading. On an undulating profile, that figure blends steep pitches, flatter recovery, and short descents into a single number that never actually appears under your wheels for long. The steepest ramp bites at 26.05% — far above the average — so you cannot pace off the mean and expect the road to cooperate.

Across the profile, expect:

• Flatter and recovery sections, including false flats and short descents where speed comes cheap
• Repeated short climbs that force you to re-accelerate again and again
• A steepest ramp at 26.05% that demands your lowest gear and a deliberate change of rhythm

Pacing Notes

On an undulating climb like this, chasing even speed will wreck you — you will overcook the pitches to hold a number, then coast the descents and lose the effort. Pace by even effort instead. Anchor your climbing to your sustainable power output and hold that target through the steep ramps, letting your speed rise on the flatter and downhill sections rather than surging.

The undulation makes discipline harder, because the rollers tempt you to punch over each rise. Resist it. If you do not know your ceiling, run the numbers first with the FTP estimator so your effort target is grounded rather than guessed.

Gearing

The 26.05% maximum ramp governs your setup. That is steep enough that a standard chainset will grind you to a halt, so run a compact or sub-compact chainset paired with a wide-range cassette — a 34×32 or 34×34 gives you the low gear to spin the steepest pitch instead of muscling it. Check your drivetrain before the ride; there is no fixing a too-tall bottom gear once you are on a 26% wall.

Summary

• Length: 9.9 km
• Average gradient: 6.02%
• Maximum gradient: 26.05%
• Net elevation gain: 597 m
• Total ascent: 1,035 m
• Category: 2

Puerto de Cotefablo rewards riders who respect its undulation. Pace by effort, gear for the 26.05% ramp, and treat the 1,035 m of total ascent — not the 597 m net gain — as the true measure of the day.