Shiisaka Pass

Overview

Shiisaka Pass is a Category 3 climb in Japan that runs 9.7 km from base to summit. It starts at 378 m and tops out at 799 m, for a net elevation gain of 421 m. On paper that is a moderate climb, and the Category 3 rating reflects a road that most fit riders can complete without specialist preparation.

The important number is not the net gain but the total ascent of 770 m. That 349 m gap between what you climb (770 m) and where you actually end up higher (421 m) tells you the road undulates. You gain height, give some back on descents or false flats, then climb again. Your legs feel the full 770 m even though the summit is only 421 m above the start, so treat the effort as bigger than the net figure suggests.

How the Gradient Unfolds

The 4.34% average is a blend, not a constant. Undulation of this size means the average hides both easier sections and a maximum pitch of 19.7%, which is far steeper than the mean. Ride to the average and the steep ramp will catch you out.

• Flatter or gently descending sections where you can recover and carry speed
• Repeated short climbs that stack up into the 770 m total ascent
• A single steep ramp approaching 19.7%, the hardest metres on the road

Pacing Notes

On a smooth climb you would hold steady watts and let speed vary. Shiisaka Pass punishes that model because the descents and flats waste power if you keep pushing on them. Aim for even effort on the up-pitches, hold your sustainable power output on the climbs, and soft-pedal or recover on the flatter and descending sections rather than burning matches there. Bank that recovery for the 19.7% ramp, where the grade alone will spike your effort no matter how disciplined you have been. If you are unsure what wattage you can hold, run the FTP estimator first and pace the climbing sections off that number.

Gearing

Gear for the steepest pitch, not the average. A 19.7% ramp means a 4.34% average chainset choice will leave you overgeared and grinding. Fit a compact (50/34) or sub-compact chainset paired with a wide-range cassette — a 34×32 or 34×34 low gear gives you a cadence you can actually turn on that ramp. Check your chainset and cassette before the ride; discovering you are overgeared on a 19.7% pitch is not a mistake you can fix mid-climb.

Summary

• Length: 9.7 km
• Average gradient: 4.34%
• Maximum gradient: 19.7%
• Net elevation gain: 421 m
• Total ascent: 770 m
• Category: 3

Shiisaka Pass rewards riders who respect its undulation. Pace the climbs, recover on the flats, and gear for the 19.7% ramp, and the 770 m of total ascent will feel manageable rather than punishing.