Hyogoshi Pass

Overview

Hyogoshi Pass is a Category 1 climb in Japan — and the numbers make clear why it earns that classification. Over 8 km, the road rises 740 m net, producing an average gradient of 9.23%. That average alone is demanding. What makes Hyogoshi genuinely brutal is the maximum gradient of 44.87%, a figure that sits far outside the range of typical road cycling and signals at least one section where forward momentum can effectively stop without the right setup.

Total ascent across the climb reaches 1,073 m against a net gain of 740 m, which tells you the road isn't a clean linear ramp. There are undulations — sections where you recover fractionally before the gradient bites again. Don't treat those flatter moments as rest stops; use them to reset breathing and cadence before the next steep ramp.

Gradient Profile

Starting at 398 m elevation and topping out at 1,138 m, the climb's character is defined by contrast. The 9.23% average is high enough that there is no genuinely easy section, but the 44.87% maximum reveals that certain pitches are extreme outliers — well beyond what most riders consider steep.

For context on how gradients affect power output and pacing strategy, see the Neverchill glossary entry on gradient.

Expect the climb to present itself roughly like this:

• Lower flanks: The road establishes a sustained, punishing baseline. Anything near or above 10% feels unrelenting when it goes on for multiple kilometres.
• Ramp sections: One or more pitches approach or reach the maximum gradient. These are the sections that end rides prematurely for riders who have already burned through their matches on the lower slopes.
• Undulating mid-sections: The gap between net gain (740 m) and total ascent (1,073 m) confirms the road loses and regains height in places. Respect these; false flats and short descents can encourage you to push harder than is wise.

Pacing Notes

A 9.23% average over 8 km is long enough that pacing from the bottom is non-negotiable. Riders who go out at threshold or above on the opening kilometres will pay a steep price — literally and metabolically — when the road kicks to its steepest pitches.

Target a power output you can hold for the full duration. If you don't know your current FTP, use the Neverchill FTP estimator before attempting this climb at race pace. A useful rule: if you feel comfortable in the first two kilometres of Hyogoshi, you're probably pacing correctly. If you feel good, you're probably going too hard.

Gearing

The 44.87% maximum gradient is not a figure to plan around lightly. On pitches of that severity, even riders with compact chainsets (50/34) and wide-range cassettes (11-34 or 11-36) may find themselves out of gears and forced to stand, weave, or stop. If your bike allows it:

• Run the widest cassette your derailleur can accommodate.
• A 1x drivetrain with a 40T or larger rear cog is worth considering for dedicated climbing.
• Gravel-oriented gearing (sub-1:1 ratios) is not overkill here.

Clip-in pedals and a stable core are important on pitches this steep — traction and control deteriorate quickly when a rider starts to rock excessively.

Summary

Hyogoshi Pass is not a climb where fitness alone carries you through. The Category 1 designation reflects both sustained difficulty and extreme peak gradient. Arrive with conservative pacing, appropriate gearing, and realistic expectations about the 44.87% sections. The 8 km distance is manageable; the gradient profile is not.