Coll de Redó

Coll de Redó cycling climb profile

Coll de Redó is a long category 1 climb in Spain that asks for patience more than bravado. On paper, 29.4 km at 4.02% looks manageable, but that average is exactly the trap. The climb starts at 11 m and finishes at 1194 m, gaining 1183 m net, while the total ascent is 1269 m. That difference matters: this is not a perfectly clean, metronomic rise. There is extra climbing hidden in the road profile, which usually means small interruptions, flatter sections, or brief losses that make the pacing less straightforward than the headline gradient suggests.

How the gradient unfolds

The defining feature is length. At 29.4 km, Coll de Redó gives plenty of time for small pacing mistakes to compound. A 4.02% average implies long stretches where you can keep momentum, stay seated, and ride efficiently, but the maximum gradient of 10.94% shows the climb has sharper ramps capable of pushing you above threshold if you are careless.

That combination creates a specific tactical problem. If you chase speed on the easier gradients, the steeper ramps become disproportionately expensive. If you overreact to every pitch, the climb becomes stop-start and inefficient. The best ride is likely the boring one: smooth pressure on the moderate sections, controlled breathing when the road bites, and no unnecessary accelerations just because the average gradient looks friendly.

Pacing strategy

Treat Coll de Redó as an endurance climb with threshold interruptions, not as a short steep climb. The opening should feel almost restrained. With the summit sitting 1183 m above the start, the cost of going too hard early is paid near the top, not immediately.

Use effort rather than speed as the anchor. Wind, road surface, and any flatter terrain can distort speed, while the climb’s total ascent tells you there is more work than the net elevation gain alone suggests. If you ride with power, keep the main effort below your sustainable climbing ceiling and let the steeper ramps briefly lift the number rather than forcing it. If you need a reference point, build pacing around your /glossary/ftp rather than the average gradient.

Gearing notes

Bring gearing that lets you stay seated on double-digit ramps without grinding. The 10.94% maximum is not the whole climb, but it is enough to punish an overgeared setup after a long build-up. A comfortable climbing cassette is the sensible choice here because the goal is cadence control across changing gradients, not surviving one isolated wall.

The key is to preserve leg speed when the road steepens, then shift back into a steadier rhythm as the gradient relaxes. On a climb this long, good gearing is less about pride and more about keeping the effort repeatable from bottom to summit.