Alto de Las Petras

Alto de Las Petras cycling climb profile

Alto de Las Petras is a compact but demanding climb: 2 km at an average gradient of 8%, rising from 126 m to 285 m. On paper, that makes it a short Category 3 ascent, but the key detail is how narrow the gradient range appears to be. The maximum listed gradient is 9.17%, which sits close to the 8% average, so this is not a climb defined by one savage ramp. It is more likely to feel like a sustained press on the pedals from bottom to summit.

That matters tactically. On a climb this short, it is easy to treat the opening as a launchpad and ride above threshold too early. The problem is that 8% does not give much aerodynamic benefit and does not let momentum carry you for long. Once you are overgeared or breathing too hard, there is not much profile variation in the supplied stats to suggest an obvious place to reset.

How the gradient unfolds

The start elevation is 126 m and the summit elevation is 285 m, with a listed net elevation gain of 159 m. Spread across 2 km, the climb asks for steady torque rather than repeated accelerations.

The practical read is straightforward:

• The average gradient is already steep enough to require climbing rhythm immediately.
• The maximum gradient of 9.17% suggests the hardest sections are not dramatically steeper than the climb as a whole.
• Because the climb is short, small pacing errors at the bottom can become the whole ride by the top.

This is the kind of ascent where perceived effort can lag behind the actual cost for the first few minutes. The speed is low, the gradient is firm, and the temptation is to muscle through. That works only if the effort is controlled from the first pedal strokes.

Pacing and gearing notes

Ride Alto de Las Petras as a firm, sustained effort rather than a series of surges. Settle into a gear that lets you keep pressure on the pedals without grinding. If cadence drops early, shift before the gradient forces the issue, because the difference between the average and maximum gradient is small enough that the climb may not offer much relief.

For riders using power, this is a classic place to cap the opening and build through the second half. If you know your /glossary/ftp, avoid treating the base like a sprint unless the goal is a maximal short climb effort. For training, it suits threshold-style work or hard hill repeats, especially because the gradient is steep enough to make pacing discipline obvious.

The simplest strategy is also the best one: start controlled, stay seated when possible, keep the gear light enough to avoid stalling, and only lift the effort once the summit is clearly within reach.