Col de Vars

Col de Vars Cycling Climb

Col de Vars is a Category 1 climb in the French Alps that earns its classification through sustained gradient and a vicious sting in its tail. The standard ascent covers 8.1 km, rises 647 m net, and logs 834 m of total ascent — a figure that hints at some undulation before the road settles into its upper grind. The average gradient of 7.98% sits right at the threshold where most riders cannot soft-pedal through it; every kilometre demands deliberate effort.

How the Gradient Unfolds

The climb begins at 1,468 m, already at altitude, which compresses the available oxygen before the road has done anything to hurt you. For the first half of the ascent, the gradient is manageable and the road tends to offer broader corners that allow you to pick cleaner lines and control rhythm. This is the section to bank smooth, controlled watts — not to accelerate.

The upper half is where Col de Vars distinguishes itself. The road tightens and the gradient spikes. That 23.62% maximum is not a rumour: there are short ramps in the upper kilometres that briefly turn the climb into a near-wall, demanding either a very low gear or the ability to sustain extremely high torque at low cadence. Neither option is comfortable at altitude after 6+ km of climbing.

The net elevation gain of 647 m against a total ascent of 834 m confirms the climb is not a clean linear grind. Expect short pockets of false flat or minor descent that offer momentary recovery but also reset your momentum before the gradient kicks again.

Pacing Notes

With an 8.1 km climb averaging just under 8%, your target power should sit close to your functional threshold — not above it. The temptation on the gentler lower slopes is to push harder than planned; resist it. The upper ramps are where races are lost and training rides are blown apart.

A practical approach:

• Bottom third: Settle 5–8% below threshold. Establish cadence, control breathing.
• Middle third: Hold threshold or marginally below. The gradient is consistent here — use it to find your ceiling.
• Upper third: Manage effort rather than chase power. The 23.62% ramps will spike any power meter reading; focus on sustainable cadence over raw numbers.

Gearing Recommendations

Given the 23.62% maximum gradient, compact or sub-compact gearing is strongly advisable unless you are a trained climber with a high power-to-weight ratio. On a standard compact chainset (50/34), a rear cassette reaching at least 32t — ideally 34t — will keep cadence above 65–70 rpm on the steepest sections. Grinding at 50 rpm or below on a mountain pass above 2,000 m is a fast route to premature fatigue and knee stress.

If you use a power-based pacing strategy, calibrate targets against the full 834 m of total ascent rather than the 647 m net gain. The extra climbing is real work. For help estimating your sustainable climbing power, see the FTP estimator.

Key Stats at a Glance

Col de Vars rewards patience and punishes early aggression. Know your numbers before you start, protect your legs through the opening kilometres, and save something for the ramps that define the upper road.