Colle di Bardoney

Colle di Bardoney cycling climb profile

Colle di Bardoney is a long Category 1 climb that asks for patience more than violence. On paper, the key number is the length: 28.9 km from a start elevation of 587 m to a summit elevation of 1719 m. The average gradient is 3.92%, which can look manageable, but that figure only tells part of the story. Over this distance, even a moderate average becomes a real aerobic commitment.

The climb gains 1132 m net, with 1144 m of total ascent. That small difference between net gain and total ascent is important. It suggests the road is mostly a continuous upward effort rather than a climb broken up by meaningful downhill recovery. For pacing, that matters more than the headline gradient. You should not expect many chances to reset once the climb is underway.

How the gradient feels

With an average of 3.92%, Colle di Bardoney is unlikely to feel like a repeated sequence of steep walls. Instead, it is the kind of climb where speed can stay deceptively high early, especially if you ride it like a false flat rather than a mountain pass. That is the trap. The gradient is low enough to tempt riders into pressing a gear, but the duration means that early torque accumulates quickly.

The maximum gradient is 9.35%, so the climb does contain sections that can bite. Without a kilometre-by-kilometre breakdown, the exact placement of those steeper ramps is not available here, which makes conservative pacing the sensible default. Treat the opening phase as controlled aerobic work, keep enough range in reserve for the steeper pitches, and avoid chasing speed when the road feels easier than the climb profile suggests.

Pacing and gearing notes

This is a climb to ride from effort, not from speed. If you know your sustainable climbing power, anchor the first part below your ceiling and let the length do the work. Riders using /glossary/ftp should think of Colle di Bardoney as a sustained endurance-to-threshold management problem rather than a short power test.

Gearing should leave room for the 9.35% maximum gradient even if most of the climb sits well below that. An overly large gear can feel efficient on the gentler sections, but it becomes costly when the road pitches up after a long accumulation of work. Choose a setup that lets you stay seated and keep cadence under control when the gradient rises.

The cleanest way to ride Colle di Bardoney is to resist the average gradient. Respect the 28.9 km length, use the early slope to settle into rhythm, and save the sharper efforts for the sections where the climb actually demands them.