Passo di Chiavalli

Overview

Passo di Chiavalli is a 10.5 km category 3 climb that rewards patience over raw power. From a start elevation of 420 m it winds up to a summit at 869 m, a net gain of 449 m over its full length. The average gradient sits at a moderate 4.27%, which places it firmly in tempo territory rather than the leg-breaking steepness of a hors catégorie giant. That said, the road does bite in places, with a maximum gradient of 8.42% waiting on its steepest ramp. The total ascent of 432 m confirms this is a climb that rolls upward steadily, with only minor false-flat or recovery sections dampening the overall gain.

How the Gradient Unfolds

The gap between the 4.27% average and the 8.42% maximum tells the real story: this is an uneven climb. A perfectly constant 4.27% road would feel almost pleasant, but Chiavalli concentrates its difficulty into shorter, steeper pitches. Expect long stretches that sit well below the average, letting you settle into a rhythm, punctuated by pinches that briefly double the effort as they approach that 8.42% peak. Because the net gain of 449 m slightly exceeds the total ascent of 432 m, the profile is almost entirely upward, with negligible descending or flat relief to break the climb. Reading the road ahead matters here — the difference between the easy and hard sections is large enough that blindly holding one gear will cost you.

Pacing Notes

On a climb this length, the smart approach is to pace off your sustainable power rather than the terrain. Ride the shallow sections just below threshold, then let your effort rise naturally over the steeper pinches without redlining. Anchoring your pacing to your FTP keeps you from burning matches early on the gentler lower slopes. If you are unsure of your current number, run through the FTP estimator before you attempt Chiavalli so your target watts reflect real fitness. At 4.27% average, most riders can hold a strong tempo the whole way; the discipline is refusing to over-cook the 8.42% ramp and blow the back half of the 10.5 km.

Gearing

For a category 3 climb averaging 4.27%, standard compact gearing is more than adequate for most riders. A 34×32 setup gives you enough range to spin comfortably through the steeper 8.42% pinches while keeping a usable cadence on the shallower tempo sections. Lighter or less-trained riders, or anyone tackling Chiavalli at the end of a long day, will appreciate the extra safety net of a 34×34, which drops your climbing gear low enough to protect the knees on the maximum ramp. Either way, favor a slightly easier gear than you think you need — spinning the steep bits beats grinding them.

Summary

Passo di Chiavalli is an honest, rhythm-friendly category 3 climb: long enough at 10.5 km to demand real pacing, gentle enough at 4.27% average to reward a steady tempo, yet spiky enough at 8.42% max to punish anyone who ignores the profile. Pace it off your FTP, gear conservatively, and let the 449 m of climbing come to you.

Length: 10.5 km
Average gradient: 4.27%
Max gradient: 8.42%
Start: 420 m
Summit: 869 m
Net gain: 449 m
Total ascent: 432 m
Category: 3