Passo del Bardellone

Overview

Passo del Bardellone is a short climb only by the clock. Over 3.8 km it hauls you from a valley floor at 103 m to a summit of 532 m, a net gain of 429 m that arrives with almost no ceremony. The average gradient reads 11.24%, and that figure is not softened by flat approaches or recovery bends — it is a number you feel in your legs from the moment the road tilts up. With a maximum pitch of 18.71%, this is a Category 1 ascent that behaves like something harder, rewarding riders who respect it and quietly destroying those who don't.

How the Gradient Unfolds

The defining trait of Bardellone is relentlessness. An 11.24% average across just 3.8 km leaves little room for the climb to breathe, so instead of alternating between steep ramps and easy landings, the road simply keeps punching. The recorded total ascent of 386 m over the distance confirms the sensation: the grade rarely relents enough to coast. Expect long stretches that sit close to the average, then sudden stiffening toward the 18.71% maximum where the surface seems to rear up in front of you. There is no false summit reward here — the elevation profile is a near-continuous upward line, and the 429 m of net gain is delivered in one sustained, unbroken effort rather than parceled out in kinder installments.

Pacing Notes

On a climb this steep and this short, pacing is everything. The temptation is to attack the lower slopes, but at 11.24% average you cannot bank time the way you might on a gentler pass — you can only bank fatigue. Ride the first two thirds a touch under your threshold and keep something in reserve for the ramps that lean toward 18.71%, where power spikes are unavoidable.

Your FTP is the number that matters most here, because sustained double-digit gradients pin you close to threshold for the entire 3.8 km with no drafting and no coasting. If you're unsure where yours sits, run the numbers through the FTP estimator before you plan an effort. Knowing that figure lets you translate the 429 m of climbing into a target power you can actually hold to the 532 m summit.

Gearing

Do not under-gear this one. With an 11.24% average and pitches to 18.71%, most riders will want the easiest cassette they can fit. A compact 34-tooth front paired with a 34×32 is a sensible floor for strong climbers, but the smart choice for the majority is 34×34, which buys you the cadence to keep the pedals turning through the steepest ramps rather than grinding to a near-standstill. On a wall like Bardellone, spinning a slightly easier gear beats muscling a harder one every time.

Summary

Passo del Bardellone is a concentrated test: brief in distance, savage in gradient, and unforgiving in character. Come with low gears, a clear pacing plan, and respect for a climb that gives none.

Length: 3.8 km
Average gradient: 11.24%
Max gradient: 18.71%
Start: 103 m
Summit: 532 m
Net gain: 429 m
Total ascent: 386 m
Category: 1