Col de Peyresourde

Col de Peyresourde Cycling Climb

Col de Peyresourde is a Category 1 climb in the French Pyrenees, rising 977 m over 8.6 km at an average gradient of 8.15%. Those numbers alone earn it respect, but the 22.96% maximum gradient is what separates casual attempts from well-executed ones. Starting at 904 m elevation and topping out at 1,603 m, this is a climb that demands honest self-assessment before you leave the valley.

How the Gradient Unfolds

The climb opens with consistent, unrelenting pressure. There is no gentle warm-up kilometre to ease you in — the road pitches upward immediately and holds its angle with little mercy. The average of 8.15% sustained across 8.6 km means you are rarely coasting on an easy ramp between hard sections; the difficulty is baked into the baseline throughout.

The maximum gradient of 22.96% represents a short but brutal ramp that appears mid-to-upper climb. At that angle, forward momentum collapses fast. Riders who have spent their FTP budget early will be out of the saddle, grinding, or walking. Those who banked some reserve will get through it in a controlled, seated effort.

The upper section, once past the steepest pitch, offers no full recovery — the gradient eases only slightly before the summit at 1,603 m. Expect legs to be heavily fatigued for any final push.

Pacing Notes

With 977 m of total ascent packed into 8.6 km, average speed is low and time-on-legs is significant. The temptation to chase faster riders on the early slopes will cost you badly on the upper third.

Key pacing principles for Peyresourde:

• Target a power output you can sustain for the full 8.6 km, not just the first few kilometres — if you're unsure of your sustainable power, use the FTP estimator before committing to a race-pace effort.
• Treat the 8.15% average as your ceiling for the opening half, not your floor.
• When the 22.96% ramp arrives, shift to your easiest gear before you need it. Waiting until you're already stalling is too late.
• Cadence over torque: on a sustained 8%+ climb with a near-23% spike, grinding a big gear accelerates muscular fatigue. Keep cadence high where the road allows.

Gearing Recommendations

Do not arrive at Peyresourde on a compact chainset with an 11-28 cassette and expect comfort. A 34-tooth inner ring paired with at least a 32-tooth rear sprocket is sensible for most non-elite riders. If you are riding a gravel or adventure setup, a 1x drivetrain with a wide-range cassette (40t or larger) will handle the 22.96% maximum without forcing you to stand and mash.

Road bike riders chasing times should still prioritise having a bailout gear available. The climb is short enough that marginal aero gains from a taller gear ratio are irrelevant — surviving the steep ramp in control is what determines overall time.

Climb at a Glance

For comparison with other Category 1 Pyrenean climbs, see the Neverchill climb library.