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Explore/Japan/JP 20/Usui Pass & Karuizawa — Komoro to the Nakasendo Highlands
JPKaruizawa, JapanModeratePaved

Usui Pass & Karuizawa — Komoro to the NakasendoHighlands.

Distance
55 km
Duration
1 day
Climb
900 m
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Curated by Rider · Updated Jun 2026
Overview /01Day-by-day /02Open in app →
Overview

Usui Pass & Karuizawa — Komoro to the Nakasendo Highlands.

A historic ride along the old Nakasendo highway through Nagano's eastern highlands beneath Mt Asama, Japan's most active volcano. From the castle town of Komoro through the larch forests of Karuizawa to the Usui Pass, where the old post road drops toward Gunma past the Megane-bashi brick railway bridge.

Quick facts

SurfacePaved
Distance55 km
Days1
Total climb900 m
DifficultyModerate
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Day-by-day

The route.

ROUTE
4 stops
Start
Komoro KaikoenStart · Start at Komoro's Kaikoen, the castle park made famous by the poet Shimazaki Toson. Mt Asama smokes to the north.
Photo
Kyu-KaruizawaPhoto Spot · Kyu-Karuizawa, the historic hill resort below Mt Asama. Tree-lined Ginza street, cool larch forests, and old Meiji-era villas.
Food
Karuizawa StationRestaurant · Karuizawa Station — modern hub for the highlands. Eat and refuel before the climb east to the Usui Pass.
End
Usui Pass Observation PlatformEnd · The Usui Pass, the old Nakasendo crossing into Gunma. Sweeping views to Mt Asama and the jagged Myogi range; the Megane-bashi brick arch bridge sits just below the pass.

More routes in Japan

Chokai Blue Line — Sea-to-Sky Volcano SkylineJP 05 · 70 kmJapan Alps Highway — Matsumoto to Takayama via Abo PassJP 20 · 140 kmMt Tsukuba Skyline — Ibaraki's Kanto Plain TougeJP 08 · 55 kmDoshi Road — Sagamihara to Lake Yamanaka via Yamabushi PassJP 14 · 63 kmIzu Skyline — Atami to Amagi Kogen Ridge RunJP 22 · 60 kmMyogi-san Loop — Gunma's Crag Mountain SanctuaryJP 10 · 45 km

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