Cimirlo Pass

Overview

Cimirlo Pass is a Category 2 climb in Italy that covers 8.4 km from base to summit, rising 562 m net with a total ascent of 574 m. Starting at 181 m elevation, it tops out at 743 m. The average gradient of 6.69% sits firmly in the range that separates disciplined pacing from early blowups — sustainable for a trained rider, but unforgiving if you go out too hard.

How the Gradient Unfolds

The 7-metre difference between net elevation gain (562 m) and total ascent (574 m) suggests the road is largely unrelenting, with only minor undulations rather than genuine relief sections. Expect this to feel close to a continuous effort from bottom to top.

The maximum gradient of 16.72% is the number that demands respect. A climb averaging 6.69% across 8.4 km with a peak nearly 2.5 times that average means at least one section pitches up sharply — possibly more than one. These ramps are where poorly managed riders crack. There is no published kilometre-by-kilometre gradient breakdown in the available data, so scout the route beforehand or check a GPS file to identify exactly where the steep sections land.

Pacing Strategy

With an average gradient just below 7%, this climb rewards a steady FTP-based approach. A few principles:

• Set your ceiling early. The max gradient of 16.72% will arrive at some point. If you're already deep in the red when it hits, your climb is over. Ride the early kilometres at a pace you could hold for considerably longer than the actual duration.
• Target effort, not speed. On a 6.69% average, speed becomes a misleading proxy for effort. Use power or perceived exertion calibrated to your FTP — aim for a sustainable threshold range rather than chasing a number on the screen.
• Anticipate the steep ramps. When the gradient approaches or exceeds 16%, the power required to maintain speed jumps sharply. It's often smarter to let speed drop slightly and hold consistent power than to surge and accumulate unnecessary fatigue.

Gearing Notes

The combination of 8.4 km, a near-7% average, and a 16.72% maximum makes compact gearing or a wide-range cassette advisable. A rider spinning efficiently at 75–85 rpm through the moderate sections needs to be able to maintain cadence when the gradient doubles. Arriving at a 16%+ ramp in too large a gear mid-climb is a common and avoidable mistake.

If you're unsure whether your current setup is matched to your power output, use the FTP Estimator to establish a baseline before planning your gearing targets.

What to Expect on the Bike

562 m of climbing over 8.4 km places a significant but finite demand on your legs. This is not a climb that rewards heroics. The riders who go well here are the ones who treat the average gradient as a ceiling in the early kilometres, leaving something for the steeper passages rather than discovering them with empty tanks.

For comparison with other Italian climbs of similar character, see the Neverchill climbs directory.