Eisenerzer Höhe

Overview

The Eisenerzer Höhe is a hors catégorie (HC) climb in Austria, and it earns that rating without any padding. Over 8.5 km it delivers a net elevation gain of 893 m, rising from a start elevation of 656 m to a summit at 1549 m. With an average gradient of 10.51%, this is a sustained, unforgiving effort from the first pedal stroke to the last — there are no long false flats to hide behind and no gentle run-in to ease you into it.

What the net figure conceals is the undulation. The total ascent across the climb is 1033 m, 140 m more than the net gain, which means the road gives some elevation back before clawing it up again. Those descents and dips do not translate into rest — every metre lost has to be re-earned at grades steeper than the average, so the true climbing burden is heavier than the 893 m headline suggests. Treat the total ascent as the number your legs will actually feel.

How the Gradient Unfolds

The 10.51% average is a blend, not a constant. On a climb this steep, the average masks both the short recovery dips and the ramps that spike well into the high teens and beyond. Expect the gradient to swing rather than settle.

• Brief recovery or flatter sections where the road briefly eases and hands back a little elevation
• Repeated short climbs that re-take the metres you just descended, each steeper than the average
• Sharp, steep ramps stacked through the middle and upper slopes where the grade bites hardest

Pacing Notes

On an undulating climb like this, chasing even speed is a trap — you will spike your power on every ramp and blow up before the summit. Pace by effort instead. Hold a steady, sustainable power output and let your speed fall on the steep pitches and rise on the brief flatter sections. The dips are not rest; resist the urge to hammer them, and do not overpay on the ramps trying to hold a number.

Before you commit, know your ceiling. Use the FTP estimator to set a realistic target, then ride the whole 8.5 km a touch under it so the repeated re-climbs of that extra 140 m do not empty the tank early.

Gearing

The steep sustained pitches govern your gearing choice here, not the average. Run a compact or sub-compact chainset paired with a wide-range cassette — a 34×32 or, better on grades this steep, a 34×34. The goal is to keep a spinnable cadence on the ramps rather than grinding at low rpm and cooking your legs. Check your setup before the ride: confirm the cassette and derailleur capacity you plan to use are actually fitted, because there is no bailout gear to discover halfway up.

Summary

• Length: 8.5 km
• Average gradient: 10.51%
• Net elevation gain: 893 m
• Total ascent: 1033 m
• Category: HC

The Eisenerzer Höhe is a pure test of sustained climbing: steep, relentless, and made harder by the 140 m of extra ascent hidden in its undulation. Pace by effort, gear low, and respect the average — it is telling the truth.