Trasattel

Overview

Trasattel is a Category 2 climb in Austria, running 21.6 km from a valley floor at 492 m to a summit at 1313 m. On paper the numbers read as moderate: a net elevation gain of 821 m spread across more than twenty kilometres suggests a long, steady drag rather than a wall. The start and summit elevations frame a big vertical envelope, but the length dilutes it into an average that flatters the difficulty.

That average is misleading. The climb records 1231 m of total ascent against just 821 m of net gain — a gap of 410 m. That extra climbing is hidden in the undulation: sections that drop away and force you to re-climb ground you have already earned. Every metre of that 410 m descent has to be paid back with interest. For the rider, it means the effort is punchier and more fragmented than a single 3.8% figure implies, and your legs never settle into one rhythm.

How the Gradient Unfolds

The 3.8% average is an accounting trick. It blends genuine descents with steep ramps, so almost no part of Trasattel actually sits at 3.8%. The headline number to respect is the 26.7% maximum — a gradient that turns a spin into a standing struggle if you meet it in the wrong gear.

• Flatter and false-flat recovery sections where the road eases or tips downhill, resetting the average
• Repeated short climbs stacked back-to-back, the source of the 410 m of extra ascent
• A single savage ramp at 26.7% that demands your lowest gear and full attention

Pacing Notes

Do not pace this climb to an even speed — the undulation makes that impossible and expensive, because chasing a constant number over the descents and re-climbs will blow you up on the steep pitches. Instead, pace to an even effort anchored to your sustainable power output. Let your speed rise on the false flats and descents without adding watts, and accept that you will slow dramatically on the 26.7% ramp. Save your matches for the repeated short climbs, not the flatter linking sections. If you do not know your threshold, run the numbers through the FTP estimator before you commit to a target for the day.

Gearing

Gearing here is dictated by the steepest gradient, not the average. A 26.7% ramp will overwhelm a standard road setup and force you to grind at damaging cadences. Run a compact (50/34) or sub-compact chainset paired with a wide-range cassette — a 34×32 at minimum, ideally 34×34 — so you keep a spinnable gear when the road stands up. Check your chainset and cassette before the ride; discovering you are over-geared at the base of the steepest ramp is not a fixable problem mid-climb.

Summary

• Length: 21.6 km
• Average gradient: 3.8%
• Maximum gradient: 26.7%
• Net elevation gain: 821 m
• Total ascent: 1231 m
• Category: 2

Trasattel rewards riders who read past the average. Treat the 3.8% as noise, respect the 26.7% ramp, gear low, and pace to effort — and the 410 m of hidden undulation becomes manageable rather than ruinous.