Ningyō Pass

Overview

Ningyō Pass is a Category 2 road climb in Japan, covering 6.7 km from a starting elevation of 347 m to a summit at 776 m. The net elevation gain is 429 m, though total ascent reaches 513 m — meaning the road is not a clean, unbroken ramp. There are undulations along the way, and those extra 84 m of climbing relative to the net gain indicate at least one or two punchy descents or flatter sections that interrupt the rhythm before the road kicks up again.

At 6.42% average gradient, Ningyō Pass sits firmly in the sustained-effort category — not steep enough to force a crawl, but consistent enough to drain glycogen if you open too hard at the bottom.

How the Gradient Unfolds

The 6.42% average is a reliable guide to overall effort, but the 12.55% maximum gradient tells a different story about at least one section of the road. That near-double gap between average and maximum means there is a significant ramp somewhere on the climb — likely in the mid or upper third, where mountain roads frequently tighten and steepen before the summit.

The total ascent figure of 513 m versus the 429 m net gain suggests the profile is not monotonically steep. Expect:

• An opening section that establishes rhythm, possibly at or slightly below average gradient
• A mid-section with a noticeable pitch — the section responsible for pushing the maximum to 12.55%
• One or more brief rollbacks or plateau sections that offer partial recovery
• A closing ramp to the summit at 776 m

Because the road does not commit fully to a single relentless gradient, pacing discipline matters more here than on a uniform climb. The temptation to surge on the easier stretches is real, and it will cost you on the steeper walls.

Pacing Strategy

For a 6.7 km climb at 6.42% average, most trained cyclists are looking at an effort lasting roughly 20–40 minutes depending on fitness. That duration places this squarely in the FTP-governed zone for most riders — sustainable hard effort, not a sprint, not an all-day grind.

Key pacing principles for Ningyō Pass:

• Start conservatively. The undulating profile means you cannot judge effort by what you feel in the first kilometre. Hold back 5–8% below your target power until the road's character becomes clear.
• Ride the steep sections at a fixed power ceiling. When the gradient hits its upper range near 12.55%, do not spike. Let cadence drop slightly rather than blowing through threshold.
• Use the flatter or descending sections to recover, not to accelerate. Spinning through these stretches with low resistance preserves leg chemistry for the climbs ahead.
• Re-engage on the final ramp. If you have paced correctly, there is room to lift effort in the final kilometre to the 776 m summit.

If you want to model what power output is realistic for your weight and fitness before attempting the climb, use the FTP estimator as a starting point.

Gearing Notes

The 12.55% maximum gradient is the number that dictates your minimum gear requirement. A compact chainset (50/34) paired with an 11-32 cassette handles this comfortably for most riders. Those running a standard 53/39 crankset should carry at least a 28-tooth or larger sprocket on the rear to avoid grinding at the steepest sections.

Cadence targeting: aim to maintain 75–85 rpm across the full climb. Below 70 rpm on the 12% sections — especially if sustained — accelerates muscular fatigue significantly. If you find yourself grinding under 65 rpm, you are either undergeared for the day's conditions or started too hard.

Ningyō Pass rewards a measured, metronomic approach. The Category 2 rating reflects genuine physical demand: 429 m of net gain over 6.7 km is meaningful work, and the irregular gradient profile removes any option to simply settle into a single sustainable pace and forget about it.