colle delle Selle Vecchie

Overview

The Colle delle Selle Vecchie is a Category 1 ascent that asks for sustained, honest effort from the first pedal stroke. Over 13.5 km it climbs at an average gradient of 7.61%, lifting you from 1047 m at the base to a summit of 2076 m. That is 1029 m of net elevation gain, but the road actually delivers 1803 m of total ascent — a telling gap that reveals a climb which does not simply tick upward in a clean line. There are dips, false flats, and short descents woven into the profile, meaning the true climbing sections bite harder than the average alone suggests.

How the Gradient Unfolds

The headline number is that 7.61% average, but the 1803 m of total ascent against only 1029 m of net gain is where the real story lives. Roughly 774 m of that ascent is "extra" — climbing you do only to give some of it back on the rolling and descending stretches. Practically, that means the pitches where the road genuinely climbs are steeper than 7.61%, because the gentle and downhill portions drag the mean down. Starting already at 1047 m, you also begin above the altitude where thin air starts to blunt power. By the 2076 m summit, the combination of elevation and accumulated fatigue makes the closing kilometres feel disproportionately hard even if the gradient itself eases.

Pacing Notes

This is a climb to ride from the inside out. Because the road rolls, resist the urge to surge on every steep ramp — those bursts are expensive at altitude and the 13.5 km distance leaves no room to recover a blown effort. Anchor your pacing to your FTP and aim to hold a steady, sustainable percentage of it across the steady pitches, allowing your power to rise on the steep sections and settle on the false flats rather than chasing a fixed speed. If you are unsure of your threshold, run the numbers through the FTP estimator before you plan your effort. On a 7.61% average lasting the better part of an hour or more, a disciplined tempo will beat a punchy, uneven ride every time.

Gearing

At 7.61% average over 13.5 km — with steeper true-climbing pitches hidden inside that 1803 m of total ascent — gearing is not the place to be brave. A compact 34-tooth inner chainring is the sensible starting point. Pair it with at least a 34×32 low gear if you climb strongly and prefer to stay seated at a firm cadence. Most riders will be better served by a 34×34, which gives you a genuine bailout for the steep ramps late in the climb where altitude and fatigue conspire against you. Spinning a lower gear at higher cadence protects your legs across the full 1029 m of net ascent.

Summary

The Colle delle Selle Vecchie rewards patience over aggression: a Category 1 climb whose rolling profile packs 1803 m of ascent into a 13.5 km road that nets 1029 m of gain. Pace it steadily, gear it generously, and let the summit come to you.

Length: 13.5 km
Average gradient: 7.61%
Max gradient: n/a
Start: 1047 m
Summit: 2076 m
Net gain: 1029 m
Total ascent: 1803 m
Category: 1