Col des Pradeaux

Overview

Col des Pradeaux is a Category 2 climb in France, running 13.2 km from base to summit with 844 m of total ascent. The average gradient of 4.51% reads as moderate on paper, but a maximum of 15.25% signals that the road is far from uniform. This is a climb that punishes riders who treat the average as a target pace.

How the Gradient Unfolds

The starting elevation of 604 m puts the base well above sea level but not high enough to raise any altitude concerns. The summit sits at 1,199 m, meaning the road climbs nearly 600 m of net vertical — though the recorded total ascent of 844 m confirms there are undulations along the way, sections where the road kicks up, eases, and kicks again.

That gap between net elevation change and total ascent is a practical warning: you will spend energy on sections that don't show up cleanly in an average gradient figure. Riders who pace purely to the 4.51% average risk blowing up when the road hits its steeper passages. The 15.25% maximum is a genuine spike — brief, likely, but steep enough to force a gear change or a standing effort if you haven't budgeted for it.

Gradient Character

• Lower slopes: With an extended 13.2 km length, the early kilometres at a moderate average encourage a controlled, sustainable effort. Don't treat the easy opening as licence to push.
• Mid-climb variations: The undulations implied by the total ascent figure suggest the climb loses and regains gradient rhythm. Stay seated through the flatter recoveries and avoid surging.
• Upper ramps: The maximum gradient of 15.25% almost certainly appears in the final third. This is where pacing discipline from the lower slopes pays off.

Pacing Notes

For a 13.2 km effort, most trained riders will be working in the FTP range or just below — a sustained threshold or upper tempo effort depending on fitness. Use the FTP estimator to calibrate a power target before the climb.

The key pacing principle here is negative splitting the effort against a positive gradient profile. Ride the early kilometres conservatively — below threshold — so that when the road steepens toward its 15.25% maximum, you have reserve rather than deficit.

Avoid the common mistake of matching effort to perceived steepness in real time. On a climb with this much gradient variance, reactive pacing leads to spikes that accumulate fatigue faster than a steady effort would.

Gearing

A 15.25% maximum is steep enough that compact or sub-compact gearing is worth considering for any rider not carrying strong climbing legs. At that gradient, even a 34/28 combination will feel heavy if you arrive at the ramp already fatigued. A 32 or 34-tooth cassette sprocket gives meaningful headroom.

If you're comparing this climb to other French Category 2 ascents, see the Neverchill climbs directory for context on how gradient profiles compare across the region.

Summary

Col des Pradeaux is longer and more varied than its 4.51% average suggests. The 844 m of total ascent across 13.2 km demands steady commitment, and the 15.25% maximum requires specific preparation — both in gearing and in pacing discipline. Treat it as a sustained effort with a sting in the upper section, not a gentle roll.