Valico di Serra Sant'Antonio

Overview

Valico di Serra Sant'Antonio is a long-haul category-1 ascent that trades outright steepness for sheer duration. Over 31.4 km it lifts you from 322 m at the base to 1613 m at the summit, a net gain of 1291 m. The average gradient reads a deceptively gentle 4.11%, but that figure hides everything interesting about this climb: the total ascent of 1283 m confirms the road rolls rather than rising in a single clean line, and buried somewhere in those kilometres is a savage 33.45% pitch that can crack a rider who has settled into cruise mode.

How the Gradient Unfolds

Do not let the 4.11% average lull you. On a climb this long, the mean is an accountant's number — it balances stretches of near-flat valley road against ramps far steeper than the summary suggests. The gap between the 1291 m net gain and the 1283 m of total ascent is small, so there is little in the way of descending relief; the road mostly keeps pointing up. The headline is that 33.45% maximum, a wall roughly eight times the average gradient. Even if it lasts only a short section, hitting it with tired legs after 20-plus kilometres is what makes this a genuine category-1 test rather than a rolling tempo effort.

Pacing Notes

The winning strategy here is patience. With 31.4 km to cover and 1291 m to gain, this is an effort measured in tens of minutes, so anchor your intensity to your sustainable threshold rather than heroics. Riding just below your FTP for the shallow majority leaves headroom to absorb the steep ramps without blowing apart on that 33.45% wall. If you do not know your number, run the FTP estimator before you tackle it and set a power ceiling you can hold for the full climb. Treat the flatter early kilometres as recovery you are banking, not time you are losing — the climb collects its debt near the top.

Gearing

At 4.11% average you might be tempted to gear like a rouleur, but the 33.45% maximum demands you plan for the worst pitch, not the mean. A compact 34-tooth chainring is the sensible front end. Pair it with at least a 34×32 for the sustained shallower drag, and if your legs or the fatigue of 31.4 km leaves you short, a 34×34 gives the extra spinning range to keep cadence high when the road rears up. Bailout gearing is not vanity on a climb with a wall this steep — running out of cogs at 33.45% means walking.

Summary

Valico di Serra Sant'Antonio rewards riders who respect the distance and fear the spikes. It is a 31.4 km category-1 climb where a modest 4.11% average masks a 33.45% sting, and where 1291 m of net elevation asks for measured, threshold-disciplined pacing and gearing built for the worst ramp, not the average one.

Length: 31.4 km
Average gradient: 4.11%
Max gradient: 33.45%
Start: 322 m
Summit: 1613 m
Net gain: 1291 m
Total ascent: 1283 m
Category: 1