Valico Poffa di Rondenino

Overview

Valico Poffa di Rondenino is an HC climb — hors catégorie, the hardest rating there is — and the numbers explain why. It stretches 16.2 km and averages a punishing 10.7%, climbing from a start elevation of 271 m to a summit at 2008 m. That is a net elevation gain of 1737 m over a single sustained effort, with 1725 m of total ascent packed in. There are no easy kilometres here: a 10.7% average over 16.2 km means the road almost never releases you, and the 23.02% max gradient promises at least one section that borders on unrideable for many.

How the Gradient Unfolds

Because the average and the net gain sit so close together (1737 m gained against 1725 m of total ascent), this is a relentlessly upward climb with almost no relief — you don't recover on flat or downhill breathers, because there essentially aren't any. Read that gap carefully: only about 12 m separates net gain from total ascent, which tells you the road climbs almost every single metre of its 16.2 km length.

The 23.02% max gradient is more than double the 10.7% average, so expect steep ramps that spike well above what your legs settle into. When a climb averages 10.7% but peaks at 23.02%, the pain isn't evenly spread — the hardest pitches will force sharp, out-of-the-saddle efforts, while the "easier" stretches still sit in double digits.

Pacing Notes

On a climb this long and steep, pacing is everything. With 16.2 km at 10.7% ahead of you, going into the red early is a fast route to blowing up before the summit. Ride to your FTP and hold something in reserve for the 23.02% ramps, where power will spike no matter how disciplined you are.

If you don't know your sustainable ceiling, work it out before you commit to this one — use the FTP estimator to set a realistic target wattage. Aim to climb the shallower (relatively speaking) sections just under threshold so you have headroom when the gradient bites. With 1737 m of climbing to a 2008 m summit, thinner air near the top will also nibble at your numbers, so bank effort early rather than chasing a fast split.

Gearing

Gear for survival, not pride. A 10.7% average with 23.02% pitches demands the lightest gearing you can fit. A compact 34×32 is the sensible minimum, and even then the 23.02% sections will have you grinding at low cadence. If your legs or your setup allow, go further: a 34×34 gives you meaningfully more room to spin rather than lurch, and over 16.2 km of sustained double-digit grades that extra sprocket saves your knees and your matches. On a climb rising 1737 m, the smallest gear you own is the right one.

Summary

Valico Poffa di Rondenino is a true HC test: 16.2 km, a 10.7% average that rarely lets up, and a 23.02% max that punishes anyone who paces poorly. Respect the distance, gear low, and ride to your numbers.

Length: 16.2 km
Average gradient: 10.7%
Max gradient: 23.02%
Start: 271 m
Summit: 2008 m
Net gain: 1737 m
Total ascent: 1725 m
Category: HC