Portella dell'Accia

Overview

Portella dell'Accia is a category 4 climb in Italy that rewards rhythm over raw power. Over 4.8 km it lifts you from 100 m at the base to 300 m at the summit, a net gain of 200 m at an average gradient of 4.2%. That average sits firmly in the tempo zone — steep enough to make you work, shallow enough that the effort never tips into survival mode. With a maximum pitch of 6.57%, there is no wall waiting to break your cadence, which makes this a climb you can meter out cleanly from bottom to top.

How the Gradient Unfolds

The defining feature here is consistency. A 4.2% average paired with a 6.57% maximum means the road rarely strays far from its baseline — the difference between the hardest ramp and the mean is only about 2.37%. In practical terms, the climb behaves like a long, even drag rather than a series of shocks. Expect the steepest 6.57% sections to appear as brief stiffenings rather than sustained walls, most likely where the road tightens through a bend before easing back toward the average. The recorded total ascent of 181 m against the 200 m net gain tells you the profile trends upward almost the whole way, with little in the way of false-flat relief or descending kickbacks to interrupt the effort.

Pacing Notes

Because the gradient is so uniform, Portella dell'Accia is an ideal climb to ride by feel and by power. Settle in just below your threshold and hold it — the lack of steep ramps means you rarely need to surge, so a smooth, controlled effort near your FTP will carry you to the top efficiently. At 4.8 km, this is a sustained effort of roughly ten to fifteen minutes for most riders, long enough to reward disciplined pacing but short enough that going slightly over threshold early won't necessarily end your day. If you're unsure where your ceiling sits, run the numbers through the FTP estimator before you commit to a target, then aim to finish the final ramps toward 6.57% feeling like you had a touch more to give.

Gearing

Portella dell'Accia does not demand extreme gearing. With a maximum of 6.57% and an average of 4.2%, a compact setup gives you all the range you need. A 34×32 is comfortably enough for most riders to spin the steepest pitches without grinding, and it leaves you room to sit and turn a high cadence through the tempo stretches. If you prefer to keep your legs fresh, tire easily on longer efforts, or simply like a safety margin, a 34×34 lets you float up the 6.57% sections with an even lighter touch. Either choice keeps you seated and rhythmic — this is a climb won by cadence, not by muscling over ramps.

Summary

Portella dell'Accia is a clean, honest tempo climb: steady, predictable, and perfect for practising even-paced efforts. There are no surprises in its 4.8 km, just a consistent grade that trends upward from valley to summit and asks you to hold a smooth rhythm the whole way.

Length: 4.8 km
Average gradient: 4.2%
Max gradient: 6.57%
Start: 100 m
Summit: 300 m
Net gain: 200 m
Total ascent: 181 m
Category: 4