Magose Pass

Overview

Magose Pass is a Category 3 climb in Japan that runs 5.5 km from near sea level to its summit. It begins at an elevation of -2 m and tops out at 302 m, for a net elevation gain of 304 m. The average gradient across the full ascent is 5.56%, which places it firmly in the moderate range for a climb of this length.

The number that matters most here is the gap between net gain and total ascent. You climb 304 m net, but the total ascent is 404 m — meaning roughly 100 m of descending is folded into the route. That undulation changes the character of the effort: this is not a single steady drag but a road that gives back elevation and then makes you re-earn it. Expect your legs to work harder than a flat 5.56% average would suggest, because every metre lost has to be climbed twice.

How the Gradient Unfolds

The 5.56% average is a blend, not a constant. Because the route sheds and regains around 100 m, the true climbing pitches are steeper than the headline figure, offset by descents and flats that pull the average down. Do not pace off the average.

• Flatter and recovery sections where the road descends or levels — use these to eat, drink, and drop your heart rate
• Repeated short climbs stacked through the middle, each one steeper than 5.56% because the descents dilute the average
• A steep signature ramp that is the hardest sustained pitch of the day and the section that dictates your gearing

Pacing Notes

On an undulating climb like this, chasing an even speed is a trap — you would burn matches on every re-climb and blow up. Pace to even effort instead. Hold a steady target through the climbing pitches, back off and spin on the descents, and let your speed fluctuate while your power stays honest.

Anchor that target to your sustainable power output and ride the climbs just under it, leaving headroom for the steep ramp. If you do not have a current number, run the FTP estimator before you go so your pacing targets reflect today's fitness, not last season's.

Gearing

Gearing here is governed by the steepest ramp, not the average. On a short, undulating climb with a sharp pitch, an under-geared bike forces you out of the saddle at exactly the wrong moment. Run a compact or sub-compact chainset paired with a wide-range cassette — think 34×32 or 34×34 — so you can stay seated and spin the steep section rather than grinding it. Check your setup before the ride; swapping a cassette in the car park is not a plan.

Summary

• Length: 5.5 km
• Average gradient: 5.56%
• Net elevation gain: 304 m
• Total ascent: 404 m
• Category: 3

Magose Pass is a compact climb with a bite. The undulation and the steep ramp make it harder than its average implies — respect both, gear low, and pace to effort rather than speed.