Col de Manse

What to Expect on the Col de Manse

The Col de Manse sits in the Category 2 bracket — not the brutish upper tier of Alpine giants, but demanding enough to expose poor pacing and inadequate gearing. At 7.4 km long with 544 m of total ascent and an average gradient of 6.22%, it's a climb that rewards steady effort over heroics.

The road rises from a start elevation of 817 m and tops out at 1,275 m. That's a consistent, workmanlike gain over a distance short enough to tempt riders into going too hard early.

How the Gradient Unfolds

The 6.22% average masks the real story. A maximum gradient of 11.02% means there are sections that will force a gear change and break rhythm if you haven't planned for them. Expect the climb to feel relatively manageable through its opening kilometres before the road pitches up more sharply in places.

Key gradient characteristics:

• Average gradient: 6.22% — sustainable for most trained riders at a controlled tempo
• Maximum gradient: 11.02% — short but sharp, requires either a seated power push or a gear drop
• Total ascent: 544 m over 7.4 km — no flat recovery sections to speak of

This isn't a climb where you can switch off. The gradient is consistent enough that any surge to get over a steep ramp will cost you for the kilometres that remain.

Pacing Notes

With 7.4 km at this average, most riders should be targeting an effort they can sustain for roughly 20–35 minutes depending on fitness. That puts the Col de Manse squarely in FTP-adjacent territory — ride it at or slightly below threshold, and the final ramps become manageable. Push above threshold in the first half and the 11% sections will hurt disproportionately.

If you're unsure of your threshold power, use the FTP estimator before setting targets for this climb.

Practical approach:

• First 3 km: settle into a rhythm below perceived maximum — the climb is short enough to feel easy here, which is exactly the trap
• Middle section: maintain cadence over gradient increases rather than grinding; dropping a gear early is faster than recovering from a blow-up
• Final kilometres: if you've paced correctly, you have something left; this is where to apply pressure

Gearing

For most riders, a compact chainset (50/34) with a mid-range cassette (28t or 32t) will cover the Col de Manse comfortably. The 11.02% maximum doesn't require ultra-low gearing, but arriving at that pitch already fatigued in a 53/25 is a mistake. Match your gear selection to your fitness honestly, not aspirationally.

Heavier riders or those carrying loaded panniers should plan for the steeper sections and ensure they have a gear low enough to spin through without standing repeatedly.

Summary

The Col de Manse is an accessible but genuine Category 2 climb. Its 7.4 km length and 6.22% average make it a solid training target or race selection tool. The 11.02% maximum gradient is the number to plan around — get your pacing and gearing right from the bottom and the summit at 1,275 m arrives on your terms.