Alto del Tablazo

Alto del Tablazo cycling climb profile

Alto del Tablazo is a category 1 climb that asks for patience more than aggression. On paper, the headline is clear: 16.3 km at an average gradient of 6.66%, rising from 1495 m to 2580 m, with 1085 m of net elevation gain and 1094 m of total ascent. That last detail matters. The total ascent is only slightly higher than the net gain, which tells you this is not a rolling climb padded by repeated dips. It is a sustained uphill effort where most of the road is working against you.

The average gradient sits in the range where strong riders can be tempted to ride just above threshold, especially early. That is the trap. Over 16.3 km, a 6.66% average does not feel extreme in the opening phase, but the duration turns small pacing errors into expensive ones. The climb also reaches a maximum gradient of 15.65%, so the profile is not simply a metronomic grind. Even if the broader character is steady, the steepest sections are sharp enough to force changes in cadence, torque, and breathing.

How the gradient rides

Without a sector-by-sector breakdown, the safest way to read Alto del Tablazo is as a long, sustained climb with meaningful ramps rather than a climb defined by one isolated wall. The average gradient tells you the baseline effort will already be substantial. The maximum gradient tells you there are moments where that baseline can spike hard.

That combination shapes the ride. If you treat the opening kilometres like a moderate tempo climb, you preserve the ability to absorb the steeper ramps without flooding the legs. If you chase speed every time the road briefly eases, the 15.65% pitches become much harder than they need to be.

Pacing and gearing notes

Ride the climb by effort first, speed second. A good target is controlled threshold or just under it for most of the ascent, with enough margin to stay seated and composed when the gradient kicks up. For riders using power, this is a climb where /glossary/ftp discipline matters more than short-term enthusiasm.

Gearing should reflect the maximum gradient, not just the average. A setup that feels comfortable at 6.66% can feel overgeared when the road bites into double digits. Bring a low enough gear to keep cadence from collapsing on the steepest ramps, because grinding too early will raise muscular fatigue before the climb is close to finished.

The key to Alto del Tablazo is resisting the urge to make the climb harder than the numbers already make it. Settle in, protect the legs, and save the deeper efforts for the ramps where the road gives you no choice.