Passo Sadole

Overview

Passo Sadole is a hors catégorie (HC) climb — the hardest rating there is, sitting above categories 1 through 4. Over 19 km it lifts you from a start elevation of 731 m to a summit at 2065 m, a net gain of 1334 m with 1287 m of total ascent. The average gradient is 7.02%, which already marks it as a serious, sustained effort. But the number that defines this climb is the maximum: 29.01%. That is not a typo — it is a wall, and it changes how you have to think about the entire ascent.

How the Gradient Unfolds

An average of 7.02% across 19 km is a long, relentless grind on its own. The gap between that average and the 29.01% max tells the real story: the pitch is far from constant. To average 7.02% while spiking to 29.01% means there are stretches noticeably gentler than the average to balance the brutal ramps. Expect the effort to come in surges rather than a metronomic drag. When the road kicks toward that maximum, cadence collapses and it becomes a battle of raw torque against gravity. The 1334 m of net gain confirms there is nowhere to genuinely recover — every softer section is relative, not restful.

Pacing Notes

On a climb this long, discipline in the opening kilometres decides everything. Anchor your effort to your FTP and treat the average 7.02% sections as your steady rhythm — this is where you bank time without burning matches. If you are unsure of your threshold, run the numbers through the FTP estimator before you commit to a target. The real threat is the 29.01% max: those ramps will blow you far above threshold whether you like it or not, so leave headroom. Ride the moderate gradients a touch under what feels sustainable, because the steep pitches will claw that reserve straight back. With 19 km to cover and 1334 m to gain, going into the red early on Sadole is a mistake you cannot un-make.

Gearing

Do not under-gear this one. The 7.02% average alone argues for a compact chainset, but it is the 29.01% max that makes gearing non-negotiable. A 34×32 is the sensible baseline for most riders tackling an HC climb of this length, giving you a bailout ratio for the sustained sections. For the ramps toward 29.01%, though, a 34×34 is worth every gram — that extra sprocket is the difference between spinning and grinding to a standstill. Over 1334 m of climbing across 19 km, the lower gear pays back constantly by protecting your legs for the pitches that matter.

Summary

Passo Sadole is a genuine HC test: 19 km, 7.02% average, and a wall-like 29.01% max, hauling you 1334 m upward to a 2065 m summit. Gear low, pace conservatively, and respect the steep ramps.

Length: 19 km
Average gradient: 7.02%
Max gradient: 29.01%
Start: 731 m
Summit: 2065 m
Net gain: 1334 m
Total ascent: 1287 m
Category: HC