Valico di Monte Bondone

Overview

Valico di Monte Bondone is an hors catégorie (HC) climb, the top rung on the categorisation ladder above categories 1 through 4 — and it earns the label without argument. Over 14.1 km it averages a brutal 10.34%, hauling you from a start elevation of 188 m to a 1650 m summit. That is a net elevation gain of 1462 m, with 1438 m of total ascent packed into a road that barely lets up. This is not a climb you survive on fitness alone; it demands a plan, the right gearing, and the discipline to ride within yourself when everything tells you to push.

How the Gradient Unfolds

The defining feature here is the sheer consistency of the pain. A 10.34% average over 14.1 km means there is almost nowhere to recover — no long false flats to spin out the legs, no descents to bank a rest. The gradient sits in double digits for the bulk of the ascent, and it spikes to a maximum of 17.85% where the road ramps hardest. Because the average is already so high, those steep pitches feel less like isolated walls and more like the climb briefly showing its full teeth. The gap between the 10.34% average and the 17.85% max — roughly 7.51% — tells you how much steeper the worst ramps run than the relentless baseline you are already grinding.

Pacing Notes

On a climb this sustained, pacing is everything. The 10.34% average will pin your effort near threshold whether you like it or not, so anchor your target to your FTP and hold something in reserve for the 17.85% ramps rather than burying yourself early. If you do not know your threshold number, run the FTP estimator before you commit to a pacing plan. A good rule over 14.1 km of climbing: settle into a rhythm you could sustain for the full 1462 m of gain, and treat the steepest sections as short over-efforts to absorb, not attacks to launch. Go out too hard on the lower slopes and the upper half — still climbing toward 1650 m — will unravel you.

Gearing

Do not under-gear this one. With a 10.34% average and 17.85% pitches, most riders will want the widest range they can fit. A 34×32 is the sensible floor for strong climbers, giving you enough spin to stay seated through the sustained grade. But for the majority tackling 14.1 km at this severity, a 34×34 is the smarter choice — that extra sprocket keeps your cadence alive on the 17.85% ramps and protects your knees over the full 1438 m of ascent. If your setup allows an even easier bailout gear, use it. There is no glory in grinding to a halt.

Summary

Valico di Monte Bondone is a genuine HC test: long, unrelentingly steep, and gaining 1462 m with no meaningful respite. Gear low, pace to your threshold, and respect the 17.85% ramps. Ride it smart and the 1650 m summit is a reward worth every metre.

Length: 14.1 km
Average gradient: 10.34%
Max gradient: 17.85%
Start: 188 m
Summit: 1650 m
Net gain: 1462 m
Total ascent: 1438 m
Category: HC