Puerto de Candeleda

Overview

Puerto de Candeleda is an HC climb in Spain that runs 10.5 km from base to summit. It starts at 774 m and tops out at 2,009 m, delivering a net elevation gain of 1,235 m. At an average gradient of 11.79% over that distance, it sits firmly in the hardest category the sport recognizes, and the numbers explain why: sustained double-digit gradients over more than ten kilometers leave almost nowhere to hide.

The gap between the net gain and the total ascent tells the real story. You climb 1,235 m net, but the road actually goes up 1,767 m in total — meaning roughly 532 m of descending is baked into the route. That descent has to be re-climbed, so the profile undulates rather than rising cleanly. Every meter you drop is a meter you pay back with interest, and the pitches after each dip tend to be steeper than the average suggests.

How the Gradient Unfolds

An 11.79% average is already severe, but averages flatten out the extremes. On an undulating climb like this, the mean is dragged down by descents and pulled up by short, savage ramps. Expect the gradient to swing well above and below the headline figure rather than settle at a steady 12%.

• Short descending or flatter sections where the road gives back elevation before demanding it again
• Repeated short climbs stacked one after another, each re-gaining what the previous dip cost you
• Steep ramps well into the mid-to-high teens where the road kicks up out of a dip — these are the pitches that break a rhythm

Pacing Notes

On a clean climb you can hold even effort and let speed take care of itself. Here the undulation forces a choice. Chasing an even speed is a trap: you will spike your power to hold pace up every ramp out of a dip and blow apart. Instead, anchor everything to your sustainable power output and let speed fluctuate freely — fast on the descents, slow on the steep re-climbs. Ride the ramps at effort, not at a target speed. If you do not know your ceiling, run the numbers through the FTP estimator before you commit to a plan. Keep a small reserve; the repeated re-climbs punish anyone who empties the tank early.

Gearing

Gearing is dictated by the steepest pitches, not the average, and the ramps out of each dip are what govern your setup. Run a compact or sub-compact chainset paired with a wide-range cassette — think 34×32 or 34×34 at minimum. The extra low gears let you spin the steep ramps at a cadence that protects your legs instead of grinding them out. Check your chainrings and cassette before the ride; discovering you are over-geared halfway up an HC climb is not a mistake you can fix on the road.

Summary

• Length: 10.5 km
• Average gradient: 11.79%
• Net elevation gain: 1,235 m
• Total ascent: 1,767 m
• Category: HC

Puerto de Candeleda is a genuine HC test: long, steep, and undulating enough that the effort exceeds what the net gain alone implies. Respect the extra 532 m of re-climbing, pace to power, and bring gears low enough for the ramps.