Shigasaka Pass

Overview

Shigasaka Pass is a Category 2 climb in Japan, running 7.2 km from base to summit. It starts at 393 m and tops out at 860 m, for a net elevation gain of 467 m. On paper that reads as a steady, mid-length effort, and the 6.53% average gradient reinforces that impression. The category placement tells you this is a serious but not brutal climb — the kind you can race up or ride at tempo, depending on the day.

The number that reshapes the story is total ascent: 881 m. Against a net gain of only 467 m, that leaves 414 m of climbing that does not show up in the start-to-summit difference. In practice, the road gives back roughly that much through descents and false flats, then makes you re-earn it. This undulation means your legs do far more vertical work than the net figure suggests, and it changes how you should pace and gear the effort.

How the Gradient Unfolds

A 6.53% average is an accounting trick here. Because the climb sheds and regains 414 m of extra elevation, the average blends steep ramps with flat and downhill sections — so almost no part of the road actually sits at 6.53%. The real climb lives in the pitches above the mean, where the grade spikes well beyond what the average implies.

• Flatter and recovery sections where the road eases or drops, letting you shift up and spin
• Repeated short climbs that follow each dip, each one asking for a fresh surge
• The steepest ramp, sharply above the average, where you'll be out of the saddle or grinding a low gear

Pacing Notes

On a smooth climb you can hold even speed. Here, don't. Chasing a constant speed across the dips forces you to spike your power to reclaim momentum on every re-ascent, and those repeated matches burn you out early. Instead, pace to even effort — hold a steady, sustainable power output through the steep pitches and let your speed rise freely on the flatter and downhill sections rather than pushing to go faster there. If you don't know your ceiling, run the FTP estimator first so you're anchoring effort to real numbers, not feel.

Gearing

Gear for the steepest ramp, not the average. Because the grade spikes well above 6.53% on the sharp pitches, a standard chainset will leave you mashing at low cadence exactly where you can least afford it. Fit a compact or sub-compact chainset paired with a wide-range cassette — a 34×32 or 34×34 low gear gives you room to keep spinning through the steep sections and recover on the dips. Check your setup before the ride; discovering you're under-geared halfway up an undulating climb is a costly mistake.

Summary

• Length: 7.2 km
• Average gradient: 6.53%
• Maximum gradient: 20.03%
• Net elevation gain: 467 m
• Total ascent: 881 m
• Category: 2

Shigasaka Pass rewards riders who read past the average. Pace to effort, gear for the steep ramps, and treat the 414 m of hidden climbing as the real test — that's where the day is won or lost.