Alto de Los Muertos cycling climb profile
Alto de Los Muertos is not a climb that rewards optimism. At 14.8 km with an average gradient of 10.38%, it sits firmly in the category of climbs where the average number already tells most of the story. This is HC terrain because the difficulty is not built around one isolated wall or a short sting near the top. The whole climb is heavy.
The road starts at 1,051 m and tops out at 2,588 m, giving a net elevation gain of 1,537 m. That vertical change across less than 15 km is the key to understanding how it rides. There is very little room for sustained recovery. If the climb offers any easier sections, the 10.38% average means they have to be paid back by steeper ground elsewhere.
How the gradient unfolds
With only the headline profile data available, the safest read is to treat Alto de Los Muertos as a sustained, double-digit climbing effort with severe ramps rather than a steady tempo climb. The maximum gradient of 28.94% is the warning label. Even if that pitch is brief, it changes the pacing equation because it can force riders out of rhythm, spike torque, and turn a controlled threshold effort into repeated muscular surges.
That matters more than it might on a shorter climb. Over 14.8 km, any early overreach compounds. A rider who chases speed at the bottom can arrive at the steepest sections with limited ability to respond, and on gradients this high, fading does not just mean going slower. It can mean losing cadence entirely.
Pacing and gearing notes
The correct strategy is conservative early pacing. Ride the opening as if the hardest section is still ahead, because the profile gives enough evidence to assume it might be. The goal is to keep the effort below the point where each steep ramp requires a full reset. If using power, this is a climb where normalized effort can drift well above the number on the head unit because the steep pitches demand torque even when speed is low. See /glossary/ftp if you are anchoring the ride to threshold.
Gearing should be chosen for survival, not pride. A low climbing gear is essential because a 28.94% maximum gradient leaves no margin for a cassette that works only on moderate slopes. The best setup is one that lets you stay seated as long as possible, protect cadence, and avoid turning every ramp into a standing grind.
For riders targeting the full climb, the practical priority is simple: start controlled, keep the drivetrain turning, and save the real effort for the upper half. Alto de Los Muertos is long enough and steep enough that discipline is not just efficient. It is the difference between climbing it and being dismantled by it.