Sela dal Brunéch

Overview

Sela dal Brunéch is a hors catégorie climb that does not bother easing you into the effort. Over 9.9 km it averages a punishing 11.21% and gains 1108 m in elevation, lifting you from a start at 1307 m to a summit at 2415 m. That average alone puts it in rare company: most climbs that earn an HC rating do so through length, but this one earns it through sheer relentless steepness. There is very little respite baked into those numbers — an 11.21% average over nearly ten kilometres means the road almost never lets your legs recover, and the 23.85% maximum gradient promises at least one section that will have you out of the saddle and grinding.

How the Gradient Unfolds

Think about what an 11.21% average actually demands. If the pitch never wavered, you would be staring at 11.21% for the full 9.9 km — already brutal. But the 23.85% maximum tells you the reality is spikier than that. For the average to sit where it does while a ramp touches 23.85%, there must be stretches steeper than the mean balanced by short kicks that are merely "hard." The total ascent of 1096 m sits just below the 1108 m net gain, which tells you the climb goes almost entirely upward with negligible downhill or flat — this is a continuous drag, not a rolling profile. Expect the steepest ramps to arrive as sudden walls rather than gentle transitions.

Pacing Notes

On a climb this steep, pacing is survival. The 11.21% average means gravity, not wind or rolling resistance, is your enemy, so your power-to-weight ratio dictates everything. Ride to your FTP rather than to feel: on gradients pushing toward 23.85% it is dangerously easy to surge into the red and blow before the summit at 2415 m. Settle into a sustainable effort early, treat the steepest kicks as short over-threshold bursts you accept, and recover on the "flatter" 11%-ish sections. If you do not know your current threshold, run the numbers through the FTP estimator before you commit, then budget your effort across the full 9.9 km rather than the first steep kilometre.

Gearing

Do not underestimate the gearing you need here. With a 23.85% maximum and an 11.21% average, most riders will want the easiest gear they can reasonably fit. A compact 34-tooth chainring paired with a 34×32 low gear is the sensible floor for strong climbers, but on ramps approaching 23.85% even that will have you barely turning the cranks. If you have any doubt about your climbing legs — or you want to protect your knees over 1108 m of ascent — go to 34×34 and be glad of it. There is no shame in spinning; on a wall this steep, a lower gear is the difference between riding and walking.

Summary

Sela dal Brunéch is a genuine HC test: short by grand-tour standards at 9.9 km, but savage in gradient, averaging 11.21% and spiking to 23.85% on the way to a 2415 m summit. Come with low gearing, disciplined pacing, and respect for the numbers.

Length: 9.9 km
Average gradient: 11.21%
Max gradient: 23.85%
Start: 1307 m
Summit: 2415 m
Net gain: 1108 m
Total ascent: 1096 m
Category: HC