Collado Este de Orná

Overview

Collado Este de Orná is a genuine hors catégorie effort — the hardest classification cycling hands out — and it earns every letter of that HC label. From a base at 520 m, the road climbs relentlessly for 25.5 km to a summit at 1977 m. That is 1457 m of net elevation gain, though the total ascent of 1525 m tells you the profile is not perfectly clean: there are dips and false flats stealing back a little height along the way, meaning you climb more than the raw start-to-summit difference suggests.

The headline average gradient of 5.71% sounds almost civilized, but over 25.5 km that number is deceptive. An average this modest across a climb this long hides a wide spread of pitches, punctuated by a savage maximum gradient of 20.95%. This is a climb of patience first, punch second.

How the Gradient Unfolds

The gap between the 5.71% average and the 20.95% maximum is the whole story here. If the entire climb held its average, you would settle into a rhythm and grind it out. Instead, that 1525 m of total ascent — 68 m more than the net 1457 m gain — confirms the road rolls, giving back elevation you then have to reclaim on steeper ramps.

Expect long stretches near or below the average that let you recover, interrupted by pitches that rear toward that 20.95% wall. Those spikes are where the climb is won or lost. On a wall that steep, momentum evaporates instantly, and the surrounding easier gradients are your only chance to bank energy before the next hit.

Pacing Notes

Over 25.5 km, discipline beats aggression. Anchor your effort to your FTP and resist the urge to chase the early ramps. A climb gaining 1457 m rewards riders who hold a steady, sustainable power and keep something in reserve for the 20.95% pitches, where you will inevitably spike well above threshold.

If you are unsure of your threshold number, run the numbers through the FTP estimator before you plan your ride. Knowing your ceiling lets you sit just below it on the 5.71% sections and absorb the steep surges without blowing up.

Gearing

Do not under-gear this one. With a 20.95% maximum and 25.5 km of accumulated fatigue, you want a bailout ratio ready. A compact 34-tooth chainring paired with a 34×32 cassette is the sensible minimum for most riders on an HC climb of this length.

If you know the steep ramps will bite — or you simply want to spin rather than grind after 1457 m of climbing — step up to a 34×34. That extra sprocket keeps your cadence alive on the 20.95% pitches and protects your legs across the full 1525 m of total ascent. Fresh legs might manage less, but on Collado Este de Orná, more range is always the safer bet.

Summary

Collado Este de Orná is a long, uneven HC test: a modest 5.71% average that masks a 20.95% sting, stretched across 25.5 km and 1457 m of vertical. Pace it to your threshold, gear it generously, and respect the distance.

Length: 25.5 km
Average gradient: 5.71%
Max gradient: 20.95%
Start: 520 m
Summit: 1977 m
Net gain: 1457 m
Total ascent: 1525 m
Category: HC