Colle della Forcola

Colle della Forcola cycling climb profile

Colle della Forcola is not a climb to judge by distance alone. At 20.3 km, it already asks for a long effort, but the defining number is the 9.87% average gradient. That turns the climb from a steady endurance ascent into a sustained low-cadence problem if you arrive under-geared or pace it like a shorter pass.

The climb starts at 717 m and finishes at 2716 m, with a listed net elevation gain of 1999 m. That tells you the basic story: this is a large vertical transfer, not a rolling road with long moments of recovery. The available profile does not provide a kilometre-by-kilometre breakdown, so the responsible read is simple - expect the pressure to be continuous from bottom to summit rather than banking on defined easier sectors.

How the gradient rides

A 9.87% average over 20.3 km is severe because the gradient compounds over time. On a short climb, riding above target power for a steep section can be absorbed. Here, those decisions accumulate. Every minute spent forcing the pedals early increases the cost of the final third, where the same gradient will feel much heavier simply because fatigue has narrowed your usable power range.

The listed maximum gradient is 37.92%, which is an outlier-level figure. Whether that represents a very short ramp, a sharp inside bend, or a data spike, it still changes the practical approach: do not set up for the average. A climb with this average and that stated maximum needs a gear low enough to keep momentum when the road briefly steepens well beyond what the average suggests.

One important note on the data: the profile lists 1999 m of net elevation gain and 1915 m of total ascent, which do not fully align. For pacing, the more useful anchor is still the combination of length, start elevation, summit elevation, and average gradient. All point to the same conclusion - Colle della Forcola is a sustained HC effort with very little margin for early overreach.

Pacing and gearing

Ride the opening section as if the climb gets harder, even if the road initially feels manageable. On a climb this long and steep, the cost of enthusiasm is paid late. Keep the effort below your hard climbing ceiling, settle into a repeatable cadence, and avoid chasing surges unless the ride or race situation demands it.

Use your lowest practical climbing gear. The average gradient alone justifies it, and the stated maximum makes it essential. If your gearing forces you into repeated standing efforts, the climb will become more muscular than metabolic, which usually means higher fatigue for the same speed.

A smart pacing template is:

• First phase: controlled, no accelerations, keep breathing stable
• Middle phase: hold pressure, but stay clear of repeated spikes above /glossary/ftp
• Final phase: only lift the effort once you are confident the remaining distance is manageable

Colle della Forcola rewards restraint. The rider who treats it as one long sustained effort, rather than a sequence of attacks against the gradient, will usually climb faster by the summit.