Colle di Sora II

Colle di Sora II cycling climb profile

Colle di Sora II is a short Italian Category 4 climb that asks for control more than survival. At 2.2 km with an average gradient of 5.39%, it sits in the zone where many riders will be tempted to ride on momentum and feel. That can work if the approach is easy, but the climb is long enough to punish an early surge and steep enough, with a maximum gradient of 6.91%, to make overgearing feel expensive by the top.

The climb starts at 149 m and finishes at 270 m, gaining 121 m from bottom to summit. That tells you the main character of the ascent: it is not a high-mountain effort, but it is a real aerobic interval. The gradient is moderate on paper, yet the short length means the limiting factor is often pacing discipline rather than absolute climbing ability.

How the gradient feels

The key detail is the relationship between the average gradient and the maximum gradient. A 5.39% average with a 6.91% maximum suggests the climb does not need to be treated like a wall, but it also is not flat enough to fake. There is not much room to recover if you ride the first part too hard. The steeper moments are close enough to the average that they should be absorbed with a small gear change and steady pressure, not a full tactical reset.

That makes Colle di Sora II a good climb for riders who can hold a firm tempo without letting the bike bog down. If you are riding it in training, it works well as a controlled threshold-style effort using /glossary/ftp as the reference point. If you are riding it in a group, the danger is responding too sharply near the bottom and then carrying that oxygen debt into the upper section.

Pacing and gearing notes

Treat the first part as a setup, not the climb itself. Settle into a gear that lets you keep pressure on the pedals without forcing the cadence down. The climb is short, but 2.2 km is still enough time for a bad first minute to show up before the summit.

Practical approach:

• Start slightly under the effort you think you can sustain.
• Shift before the steeper moments rather than after cadence has already dropped.
• Stay seated for most of the climb unless you need a short reset over the maximum-gradient sections.
• Build the effort toward the summit once the legs are stable and the gradient is no longer forcing the pace.

For most riders, the best ride here is not the most aggressive one. It is the cleanest one: smooth entry, stable middle, and a controlled lift near the top. On a climb this compact, efficiency matters because there is limited distance to correct a pacing mistake.