Col de Terramont

Overview

Col de Terramont sits in the Category 2 bracket and, on paper, looks manageable: 9.9 km at a 5.03% average gradient with 496 m of net elevation gain. That average is deceptive. The total ascent figure of 789 m — significantly higher than the net gain — tells the real story. There is meaningful elevation loss embedded within the climb, which means what goes down must be re-climbed, and the road earns every meter through gradient variation rather than a smooth, consistent ramp.

Gradient Profile

The 5.03% average is soft enough that riders new to the climb often start too fast. The max gradient of 32.42% is the number that demands respect. A 32% ramp is not a hard section — it is a wall. At that pitch, even riders with well-developed FTP relative to body weight will be forced out of the saddle, and anyone caught in the wrong gear risks a stall.

The gap between average and maximum gradient here is extreme. That spread indicates the climb is not gradually escalating — it contains at least one discrete, severe ramp that arrives sharply. Riders who have settled into a comfortable tempo rhythm will be caught off guard if they have not pre-scouted the profile.

What to Expect, Section by Section

• Lower slopes (start elevation 596 m): The early kilometres at or below average gradient give a false sense of the climb's character. Use this section to establish a controlled, sub-threshold effort, not to build time on rivals.
• Mid-climb undulations: The discrepancy between net gain (496 m) and total ascent (789 m) confirms there are descending sections breaking up the climb. These are not recoveries — short descents followed by steep ramps are metabolically costly because the body never fully settles.
• The maximum ramp (32.42%): Wherever this falls on the road, it changes the physical demand entirely. At 32%, forward momentum collapses quickly. Riders need to identify this section in advance, shift to the lowest available gear before entering it, and accept that speed will drop to walking pace or below.

Pacing Strategy

Target a steady effort in the moderate sections — somewhere in the 85–95% FTP range depending on where this climb sits in your day. Do not chase the gradient down on the descending sections inside the climb; stay loose, recover breathing, and prepare mentally for what follows.

For the steep ramp, the priority is completion, not pace. Over-gearing on a 32% pitch risks a sudden power dropout, loss of traction, or a stall that is nearly impossible to recover from without unclipping. If you are uncertain whether your current FTP supports this kind of effort, use the FTP estimator before committing to a hard effort on Terramont.

Gearing Recommendations

This is a climb where compact gearing (50/34 or smaller chainring) paired with a wide-range cassette (32T or larger) is not optional — it is the difference between completing the maximum ramp seated and walking. A 34×32 combination gives a gear inch low enough to sustain some cadence on a 30%+ gradient. Riders on standard double chainsets (53/39) should approach the severe ramp with extreme caution.

If you are comparing equipment choices for climbs in this gradient range, the glossary entry on gearing covers the relevant calculations.

Summary

Col de Terramont is a Cat 2 climb that punishes complacency. The 5.03% average gradient understates what the 32.42% maximum and 789 m total ascent demand. Treat it as a technically complex climb requiring precise pacing, pre-selected gearing, and respect for the severe ramp — wherever it appears on the road.