Collada de la Font Terrers

Overview

The Collada de la Font Terrers is a genuine Category 1 test: 8.6 km of sustained climbing at an average gradient of 7.13%. From a start elevation of 887 m it lifts you to a summit of 1503 m, a net elevation gain of 616 m over a total ascent of 620 m. That small gap between net gain and total ascent tells you almost the whole climb points relentlessly upward — there is next to no respite, no false flat to soft-pedal and recover. The maximum gradient touches 12.21%, so the hardest ramps are roughly five points steeper than the average, sharp enough to force a hard decision about pace long before the top.

How the Gradient Unfolds

Think of this climb in terms of its shape rather than its scenery. An average of 7.13% across 8.6 km is already demanding, but averages hide the story. With a max of 12.21%, the ascent is built from steeper pitches stacked against gentler recovery stretches — yet with total ascent of 620 m against a net gain of 616 m, those "recovery" sections barely dip. Expect the road to hover around and above the average for long, grinding blocks, punctuated by the steep 12.21% pinches that will spike your effort. The last of the 616 vertical metres tends to feel the heaviest, because there is no downhill in which to bank a rest before the summit at 1503 m.

Pacing Notes

On a climb this sustained, pacing beats bravado. Your target should sit close to your threshold power: riding at or just below your FTP keeps you out of the red on the 7.13% average while leaving a match to burn on the 12.21% ramps. Do not chase the steep pitches — let the gradient lift your power briefly, then settle back the moment it eases. Over 8.6 km, small surges compound into a blow-up.

If you are unsure of your threshold, run the numbers through the FTP estimator before you plan the climb. Knowing your FTP lets you convert the 616 m of vertical into a realistic time and a sustainable effort, rather than guessing and paying for it in the final kilometres.

Gearing

Gear for the ramps, not the average. For most riders a compact 34-tooth inner chainring paired with a wide cassette is the sensible starting point. A 34×32 gives you enough range to spin the 7.13% sections without grinding, but on the 12.21% pitches — arriving late, when your legs are already loaded from 616 m of climbing — you will appreciate the extra rescue gear of a 34×34. If your knees or your legs are in any doubt, fit the 34×34: on a Category 1 climb this long, a spare gear you never use costs nothing, and a gear you needed but did not have costs the whole day.

Summary

The Collada de la Font Terrers rewards discipline: pace to threshold, gear for the steep bits, and respect the relentlessness of a climb that gains 616 m with almost no relief.

Length: 8.6 km
Average gradient: 7.13%
Max gradient: 12.21%
Start: 887 m
Summit: 1503 m
Net gain: 616 m
Total ascent: 620 m
Category: 1