Col de Braus

Overview

Col de Braus sits in the French Maritime Alps and earns its Category 2 rating the hard way. The climb runs 11.4 km from a start elevation of 435 m to a summit at 999 m, delivering a net elevation gain of 564 m. The total ascent logged over the route is 1,513 m — a figure that hints at the undulating, switch-backed character of the road rather than a simple straight-line grind.

The average gradient of 4.94% sounds manageable, but that number is being dragged down by easier lower ramps. The maximum gradient of 24.03% tells a different story.

How the Climb Rides

The lower slopes from the 435 m start ease you in with moderate pitches, giving legs time to settle into a rhythm. Don't mistake this for a flat approach — the road is consistently working, and the gradient rollercoaster means sustained effort rather than steady-state power output.

As you progress through the mid-section, the hairpin bends tighten and the gradient begins to spike. The road's character here is classically Alpine: short brutal ramps punching through each bend, followed by brief recoveries on the straights between switchbacks. This is where discipline matters. Riders who overcook the lower hairpins will pay on the steeper pitches higher up.

The maximum gradient of 24.03% appears in concentrated wall sections — likely on specific hairpin exits or tight inner corners. These are short but severe enough to require a complete gear strategy reset if you haven't pre-selected the right ratio before the gradient hits.

Gradient Breakdown

• Start elevation: 435 m
• Summit elevation: 999 m
• Net gain: 564 m
• Total ascent: 1,513 m
• Length: 11.4 km
• Average gradient: 4.94%
• Maximum gradient: 24.03%
• Category: 2

The gap between net elevation gain (564 m) and total ascent (1,513 m) is significant. It means the road gives back elevation at points — false flats or brief descents tucked between the rising hairpin sequences. These sections can feel like relief but are also where power output tends to spike if you're chasing a target pace. Manage them carefully.

Pacing Notes

Don't anchor your effort to the average. A 4.94% average gradient on an 11.4 km climb with a 24.03% peak is not a steady climb — it's a variable-gradient puzzle. Riding it at average FTP-derived watts for a consistent 5% effort will leave you under-powered on the flat sections and over-geared on the walls.

Instead:

• Ride the lower third at 85–90% of your threshold. The road is forgiving enough to bank time without burning matches.
• Anticipate the steep hairpins. Shift down before each wall section, not during. A 24% pitch leaves no room to fumble through a gear change under load.
• Use the descending segments to recover, not to chase speed. Let heart rate and breathing drop so you're controlled when the road kicks again.
• Save 10–15% of your top-end for the final push to 999 m. The summit doesn't announce itself early on this type of climb.

Gearing

For a climb with a 24.03% maximum gradient, a compact chainset (50/34) paired with a wide-range cassette (32T or larger) is strongly advisable unless you're an exceptionally strong climber. A standard 53/39 with an 11-28 cassette will leave most riders grinding to a halt or out of the saddle for extended periods on the worst ramps — neither is sustainable across an 11.4 km effort.

If you're using a road double and want to sense-check your setup before heading to the Alps, the FTP estimator can help you calculate the power-to-weight demands at given gradients.