Jiyoshi Pass

Overview

Jiyoshi Pass is a category 1 climb in Japan (JP), running 6.7 km from a start elevation of 491 m to a summit at 1087 m. On paper that gives a net elevation gain of 596 m over the climb's length. It is a serious ascent by any measure: long enough to demand a plan, steep enough to punish anyone who improvises.

The number that reframes the whole effort is total ascent. You gain 596 m net, but you climb 901 m in total — a gap of 305 m. That means the road repeatedly kicks up and drops back, forcing you to reclimb ground you have already given away. Every metre of descent inside a climb is a metre you pay for twice, so the true vertical work here is closer to 901 m than the net figure suggests. Budget for it.

How the Gradient Unfolds

The 8.88% average is an average of a rolling profile, not a steady wall. With 305 m of undulation folded in, the mean flattens out sections that are far harder — and softens sections that briefly let you breathe. The maximum gradient touches 28.85%, a ramp steep enough to stall a rider caught in the wrong gear.

• Flatter or descending recovery stretches where the road gives ground back before climbing again
• Repeated short climbs that reclaim that lost elevation, stacking fatigue
• A single savage ramp near 28.85% that dictates your gearing choice for the entire ride

Pacing Notes

On a rolling climb like this, even-speed pacing is a trap. Holding a constant speed means spiking your power on every steep reclimb and coasting the descents — you burn matches you cannot afford. Ride to even effort instead: hold a steady sustainable power output, let your speed rise on the shallow pitches and fall on the steep ones, and never chase a number on the display.

Know your ceiling before you start. Use the FTP estimator to anchor a target, then ride just under it on the ramps so the 305 m of repeated reclimbing does not empty you before the summit.

Gearing

The 28.85% maximum gradient governs your setup, not the average. Bring a compact or sub-compact chainset paired with a wide-range cassette — think 34×32 or 34×34 as a minimum — so you have a bailout gear for the steepest ramp. On a pitch that severe, spinning a low gear seated beats grinding out of the saddle. Check your chainring and cassette combination before the ride; you do not want to discover you are undergeared halfway up.

Summary

• Length: 6.7 km
• Average gradient: 8.88%
• Maximum gradient: 28.85%
• Net elevation gain: 596 m
• Total ascent: 901 m
• Category: 1

Jiyoshi Pass rewards riders who respect its undulation. Pace to effort, gear for the steepest ramp, and treat the 901 m of total ascent — not the 596 m net — as the real day's work.