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This 226 km route runs from Karuizawa to Choshi, passing through Nagano, Chiba, Gunma, Ibaraki, and Saitama. In the past 30 days, 31 bear sightings were reported within 5 km of the route. The past 7 days account for 5 of them. The latest sighting was reported 3 days ago near Annaka 松井田町上増田, Gunma.
This is an active bear corridor. Rerouting or rescheduling your hike is strongly advised.
5 places within 1 km of your route, passing through Nagano, Chiba, Gunma, Ibaraki, Saitama.
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
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
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
Annaka 松井田町土塩, Gunma
Annaka 松井田町土塩, Gunma
Size: Adult
Karuizawa 大字長倉, Nagano
Size: adult (fully grown)
Karuizawa 大字長倉, Nagano
Size: Adult
Karuizawa, Nagano
Size: juvenile
Karuizawa 中軽井沢, Nagano
An animal believed to be a bear was sighted in Yokokawa, Matsuida-machi, Annaka City.
Annaka 松井田町横川, Gunma
A bear was sighted in Nagakura, Karuizawa Town, around 9:30 AM on June 5.
Karuizawa 中軽井沢, Nagano
Size: Adult
Karuizawa, Nagano
Size: adult with cub
Karuizawa, Nagano
On 2026-06-02 around noon, a bear was sighted in Karuizawa, Karuizawa Town, Nagano Prefecture.
Karuizawa 大字軽井沢, Nagano
Size: Adult (fully grown)
Karuizawa 大字追分, Nagano
Around 7:00 PM on May 31, a bear-like animal was spotted in Shimonote, Honjo City.
Honjo 小和瀬, Saitama
One bear was sighted in Oiwake, Karuizawa Town. A nearby resident reported seeing a large black object moving in the forest.
Karuizawa 大字追分, Nagano
One bear was sighted in Karuizawa, Karuizawa Town; the area has nearby homes and the bear was about 1 meter long.
Karuizawa 中軽井沢, Nagano
Size: unknown
Karuizawa 大字追分, Nagano
Size: adult
Karuizawa 大字長倉, Nagano
Peak activity at 13:00 with 2 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, 31 bear sightings were reported within 5 km of the route. The past 7 days account for 5 of them.
The latest sighting was reported 3 days ago near Annaka 松井田町上増田, Gunma.
Recent sightings on this route peak around 13:00. Bears are generally most active at dawn and dusk.
This 226 km route runs from Karuizawa to Choshi, passing through Nagano, Chiba, Gunma, Ibaraki, and Saitama. In the past 30 days, 31 bear sightings were reported within 5 km of the route. The past 7 days account for 5 of them. The latest sighting was reported 3 days ago near Annaka 松井田町上増田, Gunma. This is an active bear corridor. Rerouting or rescheduling your hike is strongly advised.
