Walk the Old Nakasendo from Karuizawa over Usui Pass to the historic Sakamoto inn, finishing with a soak at Kotonoyu. This day trek combines mountain viewpoints, Edo-era waymarkers and manageable, mixed-terrain hiking.
More ways to explore the area's outdoor wonders
A thin trail peels away from Karuizawa’s modest inns and slips into a beech-and-conifer understory. The path rises and falls along the former Nakayama Road, where weathered stone markers and mossed irrigation moats hint at centuries of travelers. At the crest near Usui Pass the Kanto Plain spreads below; on clear mornings Mt. Asama, the Southern Alps and Yatsugatake line the horizon while a possible sea of clouds drifts beneath you.
Difficulty
moderate
Duration
5–6 hours
Fitness Level
Moderate fitness—comfortable with sustained uphill sections and uneven footing
Wildlife
History
This section of the Nakasendo was a critical Edo-period inland corridor; Usui Pass acquired a reputation as one of the route's most difficult stretches for pack travel.
Conservation
Stick to the established trail, pack out trash and avoid feeding wildlife; local groups maintain stonework and irrigation channels, so respectful use helps preserve the route.
Reserve your spot on the Old Nakasendo trekking from Karuizawa-Beyond Sugahi Pass to Sakamoto Hotel- today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Start early for the views
Begin at first light to maximize clear vistas and avoid afternoon clouds on the Usui Pass viewpoint.
Wear sturdy boots
Trail alternates between stone steps and muddy sections—supportive, grippy footwear reduces fatigue and ankle risk.
Bring cash and a towel
Kotonoyu onsen commonly charges an entry fee and may not accept cards; carry small bills and a lightweight towel.
Conserve battery and carry a map
Cell coverage can be spotty; bring a charged power bank and a paper or offline map for navigation.
Hiking boots
Support and traction for rocky, muddy and root-strewn sections of the Nakasendo route.
Waterproof shell & layers
Light rain and rapid temperature shifts are common at elevation; breathable layers keep you comfortable.
fall
Trekking poles
Poles reduce knee strain on descents and help balance on uneven ground.
Daypack with water and snacks
Carry 1–2 L water, energy food, basic first-aid and cash for the onsen and small shops.