Paso de las Lagunas

Paso de las Lagunas cycling climb profile

Paso de las Lagunas is a compact category 4 climb in Chile, measuring 2.7 km at an average gradient of 4.53%. It starts low, at 14 m, and tops out at 136 m, gaining 122 m from bottom to summit. On paper, this is not a climb defined by brutality. It is defined by rhythm.

The most important number is not just the average gradient, but how close the maximum gradient sits to it. With a listed maximum of 5.13%, Paso de las Lagunas does not appear to have the kind of sharp ramp that forces a major reset in effort or cadence. That narrow gap between average and maximum points toward a climb that rewards a smooth, sustained tempo rather than repeated surges.

How the gradient unfolds

From the base, the road gains elevation steadily rather than dramatically. A 4.53% average over 2.7 km means the climb begins asking for pressure on the pedals almost immediately, but it should never require the kind of low-cadence grinding associated with steeper gradients.

Because the maximum gradient is only 5.13%, the upper slopes are unlikely to feel meaningfully different from the lower slopes in terms of gearing demand. The climb’s difficulty comes from holding the effort cleanly all the way to the summit, not from surviving a decisive wall near the top.

That makes Paso de las Lagunas a useful climb for riders who struggle with pacing. It is long enough to punish an over-enthusiastic start, but short enough that stronger riders may be tempted to ride above threshold from the bottom. The smarter execution is to let the first minute settle, lock into a controlled cadence, then build gradually once the summit feels close.

Pacing and gearing notes

Treat this as a seated tempo climb unless conditions or race tactics demand otherwise. For training, riding around sustainable threshold pressure makes sense, especially if using /glossary/ftp as a reference point. The gradient is moderate enough that most riders should be able to stay in a comfortable cadence without reaching for their easiest gear.

Practical approach:

• Start below the effort you think you can hold, then lift once the rhythm is established.
• Avoid big early accelerations, since the climb is too short for recovery but long enough for pacing mistakes to matter.
• Keep cadence smooth through the shallow changes in pitch rather than shifting reactively.
• Save any seated acceleration for the final section, where the limited maximum gradient makes a controlled finish more effective than a desperate kick.

Paso de las Lagunas is not a climb that needs fear. It needs discipline. Ride it evenly, gear for cadence rather than survival, and the profile becomes a clean test of aerobic control.