Passo Xomo

Overview

Passo Xomo is a Category 1 climb in Italy that asks for 16 km of steady work. From a start elevation of 222 m it lifts you to a summit at 1084 m, a net elevation gain of 862 m over the run. The headline average of 5.38% sounds friendly enough, and for long stretches it is — but the 15.77% max gradient tells you the road does not stay polite the whole way up. This is a climb of rhythm punctuated by sharp reminders, the kind of ascent where discipline early pays off late.

How the Gradient Unfolds

The gap between the 5.38% average and the 15.77% maximum is the story of this climb. An average that modest across 16 km means large portions sit well under 5.38%, giving you room to breathe and settle into a cadence. But those easier sections are balanced by pitches that spike toward the max, roughly three times steeper than the average. Expect the grade to pulse rather than hold constant: shallow drags where you can carry momentum, then abrupt kicks that force you out of the saddle or down a gear. The total ascent of 837 m sits just under the 862 m net gain, meaning the road climbs almost continuously with only trivial dips — there is little free descent to recover on, so the elevation you lose you will simply have to reclaim.

Pacing Notes

Because the difficulty is unevenly distributed, pacing by feel alone will burn you on the steep ramps. Anchor your effort to your FTP instead. On the shallower drags, ride comfortably below threshold and bank freshness; when the grade rears toward 15.77%, let your power drift above threshold briefly rather than shredding your cadence to hold an arbitrary number. Over 16 km with 862 m to gain, a slightly conservative first two-thirds almost always beats a heroic start. If you are unsure where your threshold sits today, run the numbers through the FTP estimator before you commit to a target for the day. Aim to crest the final steep pitches with something in reserve, because the summit at 1084 m rewards a strong finish, not a survived one.

Gearing

With max pitches at 15.77% and a full 862 m of vertical to grind out, gearing is where most riders either float or flail. A compact 34-tooth chainring is the sensible front. For the cassette, a 34×32 will get most fit riders over the steep ramps while keeping cadence honest on the flatter drags. If you climb at a lower cadence, carry extra weight, or simply want insurance for the 15.77% kicks late in a 16 km effort, step up to a 34×34 — that extra sprocket turns the worst pitches from a grind into a spin and protects your knees over the full ascent. When in doubt on a Category 1 climb, choose the easier gear; you can always leave it unused.

Summary

Passo Xomo blends a manageable 5.38% average with 15.77% stings across 16 km, gaining 862 m to a 1084 m crest. Pace to your threshold, gear low, and let the shallow sections carry you toward the steep ones.

Length: 16 km
Average gradient: 5.38%
Max gradient: 15.77%
Start: 222 m
Summit: 1084 m
Net gain: 862 m
Total ascent: 837 m
Category: 1