Colle San Bartolomeo

Overview

Colle San Bartolomeo is a Category 2 climb in Italy, running 5.8 km from a start elevation of 218 m to a summit at 593 m. Over that distance it delivers a net elevation gain of 375 m at an average gradient of 6.5%. On paper that reads as a steady, mid-length effort, and for a rider with a good aerobic base it sits well within reach as a single sustained climb.

The number to watch, though, is total ascent: 694 m. That is 319 m more than the net gain, which means nearly half of all the climbing you do here happens on sections you then give back. The road undulates rather than pointing relentlessly upward, so the 6.5% average is an accounting figure, not a description of what your legs feel. Expect to climb, coast or descend, then climb again — a rhythm that punishes riders who treat the stated gradient as the whole story.

How the Gradient Unfolds

The 6.5% average is diluted by the descending and flatter portions baked into that 319 m of extra ascent. Where the road does climb, it climbs harder than the average implies, culminating in a steep ramp far above the mean. Read the profile as a series of efforts rather than one long grind.

• Flatter and recovery sections where the road eases or briefly drops, letting heart rate settle
• Repeated short climbs that stack up the total ascent well beyond the net gain
• A steepest ramp that spikes sharply and demands your lowest gear and a hard, seated push

Pacing Notes

On an undulating climb like this, even-speed pacing is a trap: holding a constant speed forces huge power spikes on the steep ramps and wasted effort on the flatter bits. Aim instead for even effort. Anchor your pacing to a sustainable power output and let your speed rise and fall with the terrain — ease as the road pitches up, then carry that speed through the recovery sections rather than pedaling hard where gravity already helps.

If you do not know your ceiling, run the FTP estimator before you go, then ride the climb a touch below that figure so the steep ramp does not tip you into the red you cannot recover from.

Gearing

The steepest ramp governs your setup, not the average. On pitches this severe you want a compact or sub-compact chainset paired with a wide-range cassette — a 34×32 or 34×34 low gear gives you a cadence you can actually turn on the steep section without grinding to a stall. Check your chainring and cassette before the ride; discovering you are over-geared halfway up a wall is a mistake you make only once.

Summary

• Length: 5.8 km
• Average gradient: 6.5%
• Maximum gradient: 22.6%
• Net elevation gain: 375 m
• Total ascent: 694 m
• Category: 2

Colle San Bartolomeo rewards riders who respect its undulation. Pace to effort, gear for the steepest ramp, and treat the 694 m of total ascent — not the 375 m net gain — as the true measure of the day.