Weißseejoch

Overview

The Weißseejoch is a genuine hors catégorie ascent, and the numbers tell you why before you ever turn a pedal in anger. Over 30.5 km it hauls you from a start elevation of 975 m all the way to a 2653 m summit, banking 1678 m of net elevation gain along the way. Total ascent comes in at 1669 m, so this is an almost relentlessly upward road with only the faintest hints of respite. The 5.51% average gradient sounds civil, but averages lie on a climb this long: buried inside is a savage 26.18% maximum that will pin you to the tarmac if you meet it with the wrong gear or the wrong legs. This is a climb to be respected, planned for, and paced with discipline.

How the Gradient Unfolds

A 5.51% average across 30.5 km is a deceptive figure. Spread that much climbing over that much distance and you get long ramps that sit in the mid-single digits, punctuated by pitches that spike far higher. The gap between the 5.51% average and the 26.18% max is the whole story: this climb is not uniform. Expect stretches where you settle into a rhythm and clock steady progress, then walls that force you out of the saddle or deep into your easiest gears. With 1678 m of net gain and 1669 m of total ascent, there is essentially no descending to recover on — what goes up here mostly stays up. Break the 30.5 km into thirds in your head and treat each pitch on its own terms rather than fixating on the distant 2653 m summit.

Pacing Notes

On a climb of this length, pacing is everything. Anchor your effort to your FTP and hold something in reserve for the steep pitches, where the 26.18% max will spike your power far above threshold whether you like it or not. Ride the shallower sections a touch below FTP so those spikes don't blow your whole day apart. If you don't know your threshold, run the numbers through the FTP estimator before you commit to a target. Over 1678 m of climbing, small pacing errors compound into large ones — start conservatively and let the 2653 m summit come to you.

Gearing

Gear for the wall, not the average. A 5.51% mean gradient is manageable, but the 26.18% max demands a bailout ratio you can actually turn while barely moving. A compact 34-tooth chainring paired with at least a 32-tooth sprocket (34×32) is a sensible floor for most riders here. If your legs, weight, or fitness leave any doubt over 30.5 km and 1678 m of gain, size up to 34×34 for a little extra margin on the steepest ramps. The insurance of one more easy sprocket is worth far more than the grams it costs on a climb this unforgiving.

Summary

The Weißseejoch is a long, hard, top-tier HC test: 30.5 km, 1678 m of net gain to a 2653 m summit, and a 26.18% max that punishes anyone who under-gears or over-cooks the early kilometres. Pace to your FTP, gear generously, and treat it with the respect its category demands.

Length: 30.5 km
Average gradient: 5.51%
Max gradient: 26.18%
Start: 975 m
Summit: 2653 m
Net gain: 1678 m
Total ascent: 1669 m
Category: HC