Jaizkibel Mendatea

Overview

Jaizkibel Mendatea is a category 2 climb that packs a serious punch into a compact 6.6 km. Starting almost at sea level — just 2 m — it lifts you to a summit of 452 m, a net elevation gain of 450 m. The average gradient of 6.86% tells you this is relentless rather than brutal, but the 10.21% maximum warns that there are moments where the road tilts up hard enough to sting. With a total ascent of 435 m across those 6.6 km, there is nowhere to truly recover: this is a climb you settle into and grind out, not one you attack in bursts.

How the Gradient Unfolds

The story here is consistency. An average of 6.86% over 6.6 km means the road rarely flattens, and the gap between that average and the 10.21% max is modest — this is not a climb defined by one monstrous ramp, but by sustained pressure. Expect long stretches sitting right around or just above the 6.86% average, punctuated by pitches that drag toward double digits. The difference between the 450 m net gain and the 435 m total ascent is small, confirming there are almost no false-flats or descents to break the rhythm. Once you commit past the lower slopes, the gradient simply holds and keeps holding until the 452 m summit.

Pacing Notes

Because the gradient is so even, Jaizkibel rewards a disciplined, metronomic effort over heroics. The smartest approach is to ride the climb just under your threshold and let the steady 6.86% do the damage-limitation for you. Anchor your pacing to your FTP: on a sustained 6.6 km effort like this, holding a wattage a touch below FTP for the bulk of the climb, then leaning into the final ramps toward the summit, is the classic recipe. If you do not know your number yet, run the FTP estimator before you plan your target watts. The 10.21% pitches are where riders blow up — spin through them at a controlled power rather than surging, and you will arrive at 452 m with something left.

Gearing

At 6.86% average with kicks to 10.21%, gearing is what keeps your cadence out of the red. For most riders a compact chainring paired with a wide-range cassette is ideal. A 34×32 will get many fit climbers up cleanly, letting you hold a comfortable cadence through the bulk of the 6.6 km. But given the 10.21% ramps and the total ascent of 435 m stacked with no recovery, a 34×34 is the safer, kinder choice — that extra sprocket buys you a lower floor precisely where the road bites hardest. If you tend to grind rather than spin, favour the 34×34.

Summary

Jaizkibel Mendatea is a textbook category 2 test: short enough to commit to, steep enough to respect. Its even 6.86% gradient, rising from the coastline to a 452 m summit, makes it a superb climb for practising steady tempo pacing. Bring low gearing, hold your rhythm, and let the numbers work for you.

Length: 6.6 km
Average gradient: 6.86%
Max gradient: 10.21%
Start: 2 m
Summit: 452 m
Net gain: 450 m
Total ascent: 435 m
Category: 2