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This 213 km route runs from Chiba City Museum of Art to Karuizawa, passing through Chiba, Nagano, Gunma, Saitama, and Tokyo. In the past 30 days, 31 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 Annaka 松井田町土塩, Gunma.
This is an active bear corridor. Drive through with full caution, but rerouting is the safer choice.
12 places within 1 km of your route, passing through Chiba, Nagano, Gunma, Saitama, Tokyo.
A bear was sighted in Matsuida-machi Doshio, Annaka City.
Annaka 松井田町土塩, Gunma
Size: cub
Karuizawa, Nagano
Size: Adult
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
Size: juvenile
Karuizawa 大字長倉, Nagano
Annaka 松井田町上増田, 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
Shimonita Nishinomaki, Gunma
Size: Adult
Karuizawa 大字追分, Nagano
Size: Unknown
Karuizawa 大字長倉, Nagano
Tomioka 神成, Gunma
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
Tomioka 妙義町菅原, 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: 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
Peak activity at 15:00 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 8 of them.
The latest sighting was reported 2 days ago near Annaka 松井田町土塩, Gunma.
Recent sightings on this route peak around 15:00. Bears are generally most active at dawn and dusk.
This 213 km route runs from Chiba City Museum of Art to Karuizawa, passing through Chiba, Nagano, Gunma, Saitama, and Tokyo. In the past 30 days, 31 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 Annaka 松井田町土塩, Gunma. This is an active bear corridor. Drive through with full caution, but rerouting is the safer choice.
