Zwischenwänden

Overview

Zwischenwänden is a hors catégorie (HC) climb in Austria, running 19.3 km from a valley start at 585 m to a summit at 1,836 m. That gives a net elevation gain of 1,251 m at an average gradient of 6.49% — a long, sustained effort that sits firmly in the range where climbing fitness, not raw punch, decides your day. At this length and category, it is a climb you plan around rather than attack on a whim.

The key detail is the gap between the net gain and the total ascent. You climb 1,251 m net, but your legs actually do 1,478 m of ascending — 227 m of that comes from short descents and re-climbs along the way. This is not a clean, uniform ramp to the top. The undulation means you cannot simply lock into one rhythm and hold it; you will lose and regain altitude repeatedly, and every dip you coast into is elevation you have to buy back.

How the Gradient Unfolds

The 6.49% average is an honest number, but it hides the shape. With 25 km of pedalling spread across rolling terrain and a maximum well above the mean, the steep pitches are concentrated rather than evenly smeared across the profile. Expect the gradient to swing hard around that average — the flat and descending sections pull the mean down, which means the climbing sections must be steeper than 6.49% to compensate.

• Flatter and recovery sections where the road eases or tips downhill, adding to the total ascent when it kicks back up
• Repeated short climbs stacked through the middle rather than one continuous wall
• A steepest ramp noticeably harder than the average — where over-gearing will cost you most

Pacing Notes

On a smooth climb you can chase even speed. Here, don't. The 227 m of extra ascent means an even-speed strategy will spike your effort every time the road pitches up, burning matches you need later. Ride to even effort instead: hold your sustainable power output through the steep pitches, let your speed rise freely on the flatter and downhill sections, and resist the urge to hammer the descents. Know your number before you start — run the FTP estimator and pick a target you can defend for the full 19.3 km, not just the first climb.

Gearing

With ramps well into the high teens and beyond, gear conservatively. A compact (50/34) or sub-compact chainset paired with a wide-range cassette — think 34×32 or 34×34 — keeps your cadence up on the steepest sections so you spin rather than grind. Over 19.3 km with 1,478 m of climbing, a bailout gear is not a luxury. Check your setup before the ride, not at the base.

Summary

• Length: 19.3 km
• Average gradient: 6.49%
• Net elevation gain: 1,251 m
• Total ascent: 1,478 m
• Category: HC

Zwischenwänden rewards patience over aggression: pace to even effort, gear low, and respect that the 1,478 m of total ascent asks more of you than the 1,251 m net gain suggests.