Passo della Croce Arcana

Overview

Passo della Croce Arcana is an HC-category climb in Italy, running 15.6 km from a start elevation of 531 m to a summit at 1,670 m. The net elevation gain is 1,139 m, and the road averages a demanding 7.32% across its full length. On paper it is a long, steep effort that belongs firmly in the hardest tier of climbs.

The number that reshapes the day is the gap between net gain and total ascent. You climb 1,139 m in net terms, but the profile makes you ascend 1,770 m in total — an extra 631 m of re-climbing after every dip and false flat. That undulation means the 7.32% average understates the real work: you pay for descents by climbing back out of them, and your legs never get a clean, steady rhythm. Treat this as a rolling HC, not a smooth one.

How the Gradient Unfolds

The 7.32% average is a blend, not a constant. With 631 m of hidden re-climbing folded into the total ascent, the road repeatedly gives back altitude and then reclaims it, so the steep sections punch well above the mean. The maximum pitch hits 22.81%, a wall that will force you out of the saddle or into your lowest gear.

• Flatter and short descending stretches that let you recover — but also cost you altitude you must regain.
• Repeated short climbs stacked back to back, the source of the extra 631 m over the net figure.
• A steepest ramp of 22.81% that demands your easiest gear and a calm head.

Pacing Notes

On an undulating climb like this, chase even effort, not even speed. Your pace will swing between the flatter recovery sections and the 22.81% ramp, and that is fine — hold your target sustainable power output steady and let the speed vary. Resist the urge to hammer the shallow bits to "make up time"; on a climb with 1,770 m of total ascent, matching your effort to the gradient is what gets you to 1,670 m with something left. If you do not know your ceiling, calibrate it with the FTP estimator before you commit to a number.

Gearing

The 22.81% maximum gradient dictates your setup. Run a compact or sub-compact chainset paired with a wide-range cassette — something in the region of 34×32 or 34×34 — so you have a bailout gear for the steepest ramp without grinding to a stall. Over 15.6 km and 1,770 m of total ascent, cadence preservation matters more than a top gear you will barely use. Check your chainset and cassette before the ride; discovering you are under-geared on a 22.81% wall is not the place to find out.

Summary

• Length: 15.6 km
• Average gradient: 7.32%
• Maximum gradient: 22.81%
• Net elevation gain: 1,139 m
• Total ascent: 1,770 m
• Category: HC

Passo della Croce Arcana is a genuine HC test where the undulation, not just the average, defines the effort. Pace to power, gear for the steepest pitch, and respect the 631 m of climbing that the net figure hides.