Alto del Say

Alto del Say cycling climb profile

The Alto del Say cycling climb is defined less by a savage average gradient and more by duration. On paper, 39.1 km at 3.48% looks manageable, but that number is the trap. A climb this long gives plenty of time for small pacing errors to compound, and the listed max gradient of 15.77% confirms that the road is not simply a steady drag from bottom to top.

The climb starts at 510 m and tops out at 1872 m, with 1362 m of net elevation gain. Total ascent is 1493 m, which matters because it tells you the route is not a clean, uninterrupted rise. There is more accumulated climbing than the difference between start and summit, so the road gives back a little elevation along the way before asking for it again. That kind of profile can make pacing awkward: the easier or flatter sections feel like relief, but they can also tempt you into riding too hard before the next ramp.

How the gradient unfolds

The average gradient points to a climb where momentum and rhythm will often matter as much as pure low-speed climbing strength. For long stretches, this is likely to feel like sustained aerobic pressure rather than a wall. But the 15.77% maximum gradient changes the character of the ride. Even if those steeper pitches are brief, they demand a different setup and a different mindset.

The key is not to ride Alto del Say as a 3.48% climb. Ride it as a category 1 ascent with nearly 40 km of exposure and enough steepness to punish anyone who arrives under-geared or over-threshold. The low average can hide the true cost because shallow gradients, false flats, and small descents dilute the number, while the real damage comes from repeated accelerations and torque-heavy ramps.

Pacing notes

The safest pacing strategy is to start below target effort and let the climb come to you. On a climb of 39.1 km, the first objective is not speed, it is control. Keep the opening effort clearly aerobic, especially if you are pacing by /glossary/ftp. If the road eases, resist the urge to push every shallow section. Those are the moments to settle breathing, take in fuel, and reset cadence.

When the gradient bites, avoid turning every ramp into a threshold test. A 15.77% maximum is steep enough to force power spikes even with good gearing, so the goal is damage limitation. Stay seated where possible, shift early, and keep pressure smooth rather than surging over the top of each steep pitch.

Gearing notes

Bring a genuine climbing gear. The average gradient might suggest a fast, rolling ascent, but the maximum gradient argues for a bailout option. If your easiest gear is only comfortable on steady moderate slopes, Alto del Say can become a torque session late in the climb, especially once fatigue has built across more than 1400 m of total ascent.

The best setup is one that lets you ride the moderate sections efficiently while still keeping cadence alive on the steepest ramps. That balance matters here because the climb is long enough to reward patience, but irregular enough to punish a narrow gearing range.