Mojón Largo

Overview

Mojón Largo is a category 3 climb that packs a satisfying amount of vertical into a compact stretch of road. Over 6.2 km it averages 5.41%, carrying you from a start elevation of 290 m up to a 626 m summit. The net elevation gain is 336 m, while the total ascent along the way registers 315 m — a small hint that the profile is not perfectly monotonic, with brief flatter or dipping sections mixed into the overall upward trend.

At 6.2 km with a mid-single-digit average, this is the kind of climb that rewards steady riders and punishes anyone who lights the match too early. The 11.94% maximum gradient tells you there is at least one section that bites well above the average, so the challenge is less about surviving a relentless wall and more about metering your effort across an uneven ramp.

How the Gradient Unfolds

The headline numbers frame the shape well. A 5.41% average across 6.2 km is honest, sustainable terrain, but the gap between that average and the 11.94% maximum is where the character lives. Whenever a climb's peak gradient more than doubles its average, you can expect the difficulty to be front-loaded, back-loaded, or clustered — rarely evenly spread.

The relationship between net gain and total ascent is also telling. The climb lifts you 336 m net from bottom to top, yet the total ascent measured along the road is 315 m. That difference points to a profile with rolling character rather than a single unbroken drag: short pitches that ease or dip before resuming the grind. Practically, that means you should not treat every kilometre as identical. Save something for the steepest ramp, where gradients approach 11.94%, and take advantage of the shallower stretches to recover and spin.

Pacing Notes

Treat Mojón Largo as a threshold effort. With 6.2 km of climbing at 5.41%, most riders will spend somewhere in the range of a sustained tempo-to-threshold push, so anchoring your effort to your FTP is the smartest approach. Aim to ride the shallower opening and middle sections just under threshold, leaving headroom for the 11.94% pitch where your power will spike whether you like it or not.

If you do not know your threshold yet, run the numbers through the FTP estimator before your next attempt. Knowing that figure lets you convert the 336 m of climbing into a repeatable pacing target rather than a guess. The classic mistake here is going out hard on the gentler grades near the 290 m start and then blowing up when the road kicks toward its 626 m summit.

Gearing

For a climb averaging 5.41% with ramps to 11.94%, prioritise a cassette that keeps your cadence alive on the steep sections. A compact 34-tooth inner chainring paired with a 34×32 low gear will get most fit riders over the top comfortably, spinning rather than grinding through the 336 m of ascent.

If you carry endurance-ride fatigue, ride at a heavier build, or simply prefer to protect your knees, step down to a 34×34. That extra sprocket makes the 11.94% maximum far more manageable and keeps your cadence steady across the full 6.2 km.

Summary

Mojón Largo is an approachable but rewarding category 3 effort: 6.2 km of climbing at a fair 5.41% average, punctuated by a genuinely steep 11.94% pitch that demands respect. Pace it to your threshold, gear it to spin, and the 336 m of gain to the 626 m summit will feel like a well-earned climb rather than a survival exercise.

Length: 6.2 km
Average gradient: 5.41%
Max gradient: 11.94%
Start: 290 m
Summit: 626 m
Net gain: 336 m
Total ascent: 315 m
Category: 3