Nomugi Pass

Overview

Nomugi Pass is an 11.8 km Category 2 climb in Japan that starts at 1,019 m elevation and tops out at 1,676 m, delivering a net elevation gain of 657 m. The total ascent across the route reaches 993 m — significantly more than the net figure — which signals that the road is not a clean, steady ramp. Expect at least one section where you lose meaningful elevation mid-climb before the road kicks back up, meaning you'll buy back meters you already earned.

The average gradient of 5.57% sits in the moderate range: demanding but not extreme across 11.8 km. The real number to anchor your planning to is the 29% maximum gradient. That is a severe, low-cadence wall — the kind of ramp that can end a climb for under-geared riders who haven't managed effort in the preceding kilometres.

How the Gradient Unfolds

The gap between the 5.57% average and the 29% maximum is the defining characteristic of this climb. A relatively gentle mean obscures one or more very sharp spikes. In practical terms:

• Lower and mid sections are likely where the climb builds tempo at or below the average gradient, allowing riders to settle into a sustainable pace.
• The sharp ramps — responsible for pushing the maximum to 29% — are almost certainly concentrated in specific short pitches rather than distributed evenly. You will feel the road tilt abruptly.
• The net-vs-total ascent discrepancy (657 m net, 993 m total) confirms the road descends somewhere mid-route. Don't coast through those descents without eating or drinking — you'll need the calories when the gradient reloads.

Pacing Strategy

The 5.57% average makes it tempting to push harder than you should in the early kilometres. Resist that. The 29% spikes require reserve capacity. If you arrive at a wall section already at threshold, the climb ends badly.

A useful framework:

• Ride the opening third at 75–80% of your FTP, especially if you don't know exactly where the steep pitches land.
• Treat net descents as active recovery — soft pedalling, not coasting, and use the time to eat and drink.
• On the maximum-gradient pitches, your power will spike regardless of intention. The goal is to limit the duration you spend in the red, not to prevent the spike entirely.

If you're unsure of your current FTP, use the FTP estimator before planning power targets for this climb.

Gearing Notes

A 29% gradient demands a low gear. On a standard road groupset, a 34-tooth chainring paired with a 32- or 34-tooth cassette sprocket is the minimum most riders will want. Compact and sub-compact cranks with a wide-range cassette (32t or larger) are strongly recommended unless you have a power-to-weight ratio that makes steep pitches routine.

Spin through the moderate sections rather than pushing a big gear — you'll be grateful for fresh legs when the road walls up. Cadence in the 70–80 rpm range on the average-gradient sections is a reasonable target; on the 29% pitches, many riders will drop to 50–60 rpm or lower regardless of gearing choices.

Key Numbers at a Glance

• Length: 11.8 km
• Average gradient: 5.57%
• Maximum gradient: 29%
• Net elevation gain: 657 m
• Total ascent: 993 m
• Start elevation: 1,019 m
• Summit elevation: 1,676 m
• Category: 2

For comparison with other challenging Japanese and Asian climbs, browse the climbs directory.