Kaiserau

Overview

Kaiserau is a Category 2 climb in Austria, running 8.2km from a start elevation of 619m to a summit at 1105m. The net elevation gain is 486m, giving it a stated average gradient of 5.91%. On paper that reads as a steady tempo climb, the kind you can settle into and hold. The full picture is more demanding than the average lets on.

The gap between the numbers tells the real story. The net elevation gain is 486m, but the total ascent is 639m. That 153m difference means the road does not climb in a straight line — it undulates, giving back roughly a third again of the height you earn. Every metre of descent inside the climb is a metre you have to reclaim, so your legs do more work than the net figure suggests. Plan for the total ascent, not the net.

How the Gradient Unfolds

The 5.91% average is a blend, not a constant. With 153m of undulation folded into the profile, the flatter and downhill sections drag the average down, which means the climbing pitches are steeper than 5.91% to compensate. The standout figure is the maximum gradient of 22.78% — a wall far beyond anything the average prepares you for.

• Flatter and false-flat recovery sections where the road eases or drops, lowering the running average
• Repeated short climbs stacked between those recoveries, the source of the extra 153m of ascent
• A steepest ramp at 22.78%, where gearing and composure matter more than raw power

Pacing Notes

On an undulating climb like Kaiserau, even-speed pacing is a trap. Holding a constant speed forces your power up on every ramp and lets it collapse on every dip, spiking you deep into the red exactly where the road pitches to 22.78%. Pace by effort instead. Anchor your ride to a sustainable power output and hold that target through the steep sections, accepting that your speed will rise and fall with the terrain.

Let the recovery sections do their job — spin easy where the road flattens rather than chasing speed, and save the matches for the ramps. If you do not know your ceiling yet, run the FTP estimator before you go, then ride the climb a notch below that number.

Gearing

The 22.78% maximum gradient governs your setup. That pitch is steep enough to stall a standard chainset, so come with a compact or sub-compact crank paired with a wide-range cassette — a 34×32 or 34×34 gives you the low gear to keep cadence up the ramp without grinding to a standstill. Check your chainset and cassette before the ride. Arriving under-geared on a 22.78% wall means walking, and there is no fixing it on the road.

Summary

• Length: 8.2 km
• Average gradient: 5.91%
• Maximum gradient: 22.78%
• Net elevation gain: 486 m
• Total ascent: 639 m
• Category: 2

Kaiserau rewards riders who respect the gap between its average and its extremes. Pace by effort, gear for the 22.78% ramp, and treat the 639m of total ascent as the true measure of the day.