Seuil d'Attalens

Overview

Seuil d'Attalens is the kind of climb that rewards patience over panic. Over 5.8 km it averages 5.57%, lifting you from a 430 m start to a 754 m summit — a net elevation gain of 324 m. The category-3 rating tells you most of the story: this is a serious effort, but not one that will break you the way an HC or category-1 monster might. The gradient is remarkably honest, with a maximum of just 6.54%, only a shade steeper than the average. There are no cruel double-digit ramps hiding around a corner here, which makes it an ideal climb for dialing in a repeatable, sustainable rhythm.

How the Gradient Unfolds

What defines this climb is its consistency. With an average of 5.57% and a peak of only 6.54%, the difference between the mellowest and steepest sections is less than a single percentage point. That tight band is unusual and welcome — it means the road never lurches from easy to brutal. You can settle into one gear and one cadence and hold it. The total ascent of 302 m sits just below the 324 m net gain, a sign the road climbs almost entirely upward with negligible false-flat relief. In practical terms, expect to keep pedaling under load from the base to the top with very little chance to freewheel and recover.

Pacing Notes

Because the gradient is so even, Seuil d'Attalens is best ridden as a steady-state time-trial effort rather than a series of surges. Sitting at or just below your FTP for the full 5.8 km will get you to the summit efficiently without blowing up. If you do not know your threshold, run the numbers through the FTP estimator before you plan your effort — pacing a 5.57% climb correctly is far easier when you know your ceiling. Start a touch conservatively in the first kilometre; the elevation only rises from 430 m, so there is no early altitude penalty, but a controlled opening leaves you fresh to press over the top toward 754 m.

Gearing

The modest 6.54% maximum means you do not need extreme gearing here, but comfort matters over a sustained 324 m of climbing. A compact 34-tooth inner chainring paired with a 34×32 cassette gives most riders enough range to spin the steeper pitches without grinding. If you carry extra fatigue, prefer a higher cadence, or ride this at the end of a long day, stepping up to a 34×34 buys you a welcome bailout gear for the closing metres. Either 34×32 or 34×34 will serve well; the choice comes down to your legs and your preferred cadence rather than the demands of the climb itself.

Summary

Seuil d'Attalens is a clean, consistent category-3 climb that rewards a measured, threshold-paced effort. Its narrow gradient band makes it perfect for practicing steady climbing and honing your pacing discipline.

Length 5.8 km
Average gradient 5.57%
Max gradient 6.54%
Start 430 m
Summit 754 m
Net gain 324 m
Total ascent 302 m
Category 3