Sinsgäuer Schonegg

Overview

Sinsgäuer Schonegg is the kind of climb that gets filed under hors catégorie and stays there. Over 10.5 km it averages 12.54%, a figure so steep that most riders will only ever see it flash across a screen. The road lifts you from 589 m at the base to 1900 m at the summit, a net gain of 1311 m, while the recorded total ascent comes in at 1208 m. There is no easing into this one — the average alone tells you the gradient is relentless, and the 29.61% maximum promises pitches that border on the absurd.

How the Gradient Unfolds

An average of 12.54% across 10.5 km leaves nowhere to hide. On a climb this steep, the "flat" sections are simply the parts that dip below the average — and even those stay firmly in double digits. The defining feature is the max: 29.61%. A ramp near thirty percent is not a gradient you ride so much as one you survive, standing on the pedals, weight forward, praying for grip.

Because the summit sits at 1900 m against a 589 m start, you are climbing 1311 m of net elevation. Spread across 10.5 km, that vertical gain is what forces the average so high. Expect the steepest ramps to arrive without warning, then relent just enough to let your heart rate settle before the next wall.

Pacing Notes

On a 12.54% average sustained for over ten kilometres, pacing is everything. Your goal is to hold an even effort just under threshold, because on gradients like these there is no coasting recovery — the moment you stop pedalling, you stop moving. Anchor your effort to your FTP rather than speed, since speed here is almost meaningless.

If you do not know your threshold number, estimate it with the FTP estimator before you go anywhere near a 29.61% ramp. Ride the shallower sections a touch below your target so you have headroom when the road rears up. Blow past your ceiling on the first steep pitch and the remaining metres up to 1900 m will unravel you.

Gearing

Gear for survival, not pride. On a climb averaging 12.54% with pitches to 29.61%, most riders should run the easiest setup they can bolt on. A compact 34-tooth chainring paired with a wide-range cassette is the baseline: 34×32 is the minimum I would recommend, and even then only for strong, light climbers. For everyone else, go to 34×34 or easier.

If your frame and derailleur can accept a larger cog than 34, take it. Grinding a big gear up a near-thirty-percent wall wrecks your knees and your race; spinning a low one keeps you upright and moving toward the 1900 m summit.

Summary

Sinsgäuer Schonegg is a pure test: 10.5 km, 12.54% average, and a 29.61% sting in the tail, lifting you 1311 m to a 1900 m finish. Respect the numbers, gear low, pace by feel and threshold, and you will earn one of the harder HC summits going.

Length: 10.5 km
Average gradient: 12.54%
Max gradient: 29.61%
Start: 589 m
Summit: 1900 m
Net gain: 1311 m
Total ascent: 1208 m
Category: HC