Alto del Membrillo

Alto del Membrillo cycling climb profile

Alto del Membrillo is a Category 3 climb that rewards control more than brute force. On paper, the headline number is manageable: 9.5 km at an average gradient of 4.31%. But that average is the key to understanding the effort. This is not a short punch where the correct answer is simply to ride hard from the bottom. It is long enough that poor pacing will show up before the summit, and uneven enough to require a gear range that can cover both steady climbing and sharper ramps.

The climb starts at 27 m and tops out at 437 m, giving a net elevation gain of 410 m. The listed total ascent is 382 m, which tells you the profile data should be treated as a broad guide rather than a perfect meter-by-meter script. The practical takeaway remains clear: this is a sustained uphill effort with enough elevation gain to matter, but not so steep on average that it forces a pure survival rhythm.

How the gradient rides

A 4.31% average over 9.5 km usually feels deceptively quick early on. The road invites you to stay in a bigger gear and carry speed, especially if you are fresh. That is also where the climb can take time back from riders who overestimate how easy it is. At this length, the cost of riding above threshold too early compounds, particularly once the gradient lifts toward the maximum of 9.15%.

That 9.15% maximum matters because it changes the gearing requirement. Even if most of the climb is moderate, the steeper ramps will punish riders who arrive over-geared or already close to their limit. The climb is best treated as a rolling sustained effort: settle into a controlled tempo on the lower-gradient sections, then let cadence drop slightly or shift early when the road steepens rather than trying to muscle through every ramp.

Pacing and gearing notes

For most riders, the right pacing target is just below a hard threshold effort until the final part of the climb. If you know your /glossary/ftp, this is the kind of ascent where disciplined power matters more than chasing speed changes. The average gradient is low enough that wind, momentum, and cadence choices can distort perceived effort, so use breathing and power rather than speed as the anchor.

Practical approach:

• Start conservatively for the first part of the 9.5 km and avoid turning the shallow sections into a time trial.
• Shift before the steepest ramps. The 9.15% maximum is not extreme, but it is enough to stall cadence if you wait too long.
• Keep a climbing gear available even if the average gradient looks modest. A compact or endurance-friendly setup makes sense for riders who want to stay seated and smooth.
• Save the real acceleration for when the summit effort is already in sight. The climb is long enough that an early surge can cost more than it gains.

What kind of rider it suits

Alto del Membrillo suits steady climbers and strong aerobic riders more than pure punchers. The moderate average gradient gives heavier riders a chance to carry speed, but the length and the steeper pitches still reward efficient pacing. The winning strategy is not to attack every change in gradient. It is to keep the effort stable, protect cadence when the road bites, and arrive near the top with enough left to lift the pace rather than defend it.