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This 156 km route runs from Yamanashi Prefectural Museum of Art to Gunma Prefectural Government Building, passing through Yamanashi, Gunma, and Nagano. In the past 30 days, 42 bear sightings were reported within 5 km of the route. The past 7 days account for 8 of them. The latest sighting was reported 2 days ago near Saku Arakoda, Nagano.
This is an active bear corridor. Rerouting or rescheduling your hike is strongly advised.
3 places within 1 km of your route, passing through Yamanashi, Gunma, Nagano.
On 2026-07-10 in Shinkoda, Saku City, Nagano, a bear was sighted.
Saku Arakoda, Nagano
Size: adult and cub
Karuizawa 大字追分, Nagano
Size: juvenile
Karuizawa, Nagano
Hokuto Sutamacho-Wakamiko-shinmachi, Yamanashi
Two bears believed to be a parent and child were sighted by a driver in Sutama-cho Wakamiko, Hokuto City.
Hokuto Sutamacho-Wakamiko, Yamanashi
Size: Adult
Karuizawa, Nagano
A bear was sighted in Hatsuji, Karuizawa Town, Nagano, around 10:20 on July 6.
Karuizawa 大字発地, Nagano
Tomioka 妙義町上高田, Gunma
At around 9:00 AM on July 5, a bear was sighted in Oiwake, Karuizawa Town.
Karuizawa 大字追分, Nagano
Size: adult
Karuizawa, Nagano
Size: juvenile
Karuizawa 中軽井沢, Nagano
Size: Adult (fully grown)
Karuizawa, Nagano
On 2026-07-04 afternoon, a bear was sighted in Hosshi, Karuizawa Town, Nagano Prefecture.
Karuizawa 大字発地, Nagano
A bear was sighted in Nagakura, Karuizawa Town.
Karuizawa 中軽井沢, Nagano
Around 8:00 on 2026-07-03, a bear was sighted in Hotchi, Karuizawa Town, Nagano Prefecture.
Karuizawa 大字発地, Nagano
Size: Adult
Karuizawa, Nagano
A bear was sighted in Matsuida-machi Doshio, Annaka City.
Annaka 松井田町土塩, Gunma
Annaka 下秋間, Gunma
Size: cub
Karuizawa, Nagano
Size: Adult
Karuizawa, Nagano
On 2026-07-01 in Karuizawa, Karuizawa Town, a bear was sighted.
Karuizawa 大字軽井沢, Nagano
Size: cub (juvenile)
Karuizawa 軽井沢, Nagano
Size: Adult (fully grown)
Karuizawa, Nagano
A bear was sighted in Kamimasuda, Matsuida-machi, Annaka City.
Annaka 松井田町上増田, Gunma
Size: juvenile
Karuizawa 大字長倉, Nagano
Size: adult
Karuizawa 大字追分, Nagano
Annaka 松井田町上増田, Gunma
A bear was sighted in Kamimasuda, Matsuidamachi, Annaka City.
Annaka 松井田町上増田, Gunma
Annaka 中秋間, Gunma
Annaka 松井田町土塩, Gunma
Annaka 松井田町五料, Gunma
Hokuto Nagasakacho-Hino, Yamanashi
Size: adult and cub
Karuizawa 大字長倉, Nagano
Size: Adult
Karuizawa, Nagano
Size: cub (juvenile)
Karuizawa 大字長倉, Nagano
Size: adult
Karuizawa 大字追分, Nagano
Size: Adult
Karuizawa, Nagano
Nirasaki Okusamachiwakao, Yamanashi
Size: Adult
Karuizawa 大字追分, Nagano
Size: Unknown
Karuizawa 大字長倉, Nagano
Around 17:45 on 2026-06-14, a bear was sighted in Nagakura, Karuizawa Town, Nagano Prefecture.
Karuizawa 中軽井沢, Nagano
Around 21:50 on 2026-06-13, a bear was sighted in Yokokawa, Matsuidamachi, Annaka, Gunma.
Annaka 松井田町横川, Gunma
Peak activity at 19:00 with 3 incidents
Ursus thibetanus japonicus
Safety picks and trail essentials, top-rated on Amazon and Rakuten.
For mountain rescue, call 110 (police). They will coordinate with local rescue teams.
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In the past 30 days, 42 bear sightings were reported within 5 km of the route. The past 7 days account for 8 of them.
The latest sighting was reported 2 days ago near Saku Arakoda, Nagano.
Recent sightings on this route peak around 19:00. Bears are generally most active at dawn and dusk.
This 156 km route runs from Yamanashi Prefectural Museum of Art to Gunma Prefectural Government Building, passing through Yamanashi, Gunma, and Nagano. In the past 30 days, 42 bear sightings were reported within 5 km of the route. The past 7 days account for 8 of them. The latest sighting was reported 2 days ago near Saku Arakoda, Nagano. This is an active bear corridor. Rerouting or rescheduling your hike is strongly advised.
