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This 42 km route runs from Karuizawa to Kusatsu Onsen, passing through Nagano and Gunma. In the past 30 days, 52 bear sightings were reported within 5 km of the route. The past 7 days account for 6 of them. The latest sighting was reported 1 day ago near Karuizawa 大字軽井沢, Nagano.
This is an active bear corridor. Drive through with full caution, but rerouting is the safer choice.
On 2026-07-01 in Karuizawa, Karuizawa Town, a bear was sighted.
Karuizawa 大字軽井沢, Nagano
Tsumagoi Ashiuda, Gunma
Tsumagoi Saikubo, Gunma
Tsumagoi Saikubo, Gunma
Size: juvenile
Karuizawa 大字長倉, Nagano
Tsumagoi, Gunma
Nakanojō Iriyama, Gunma
Naganohara Yokokabe, Gunma
Naganohara Kitakaruizawa, Gunma
Naganohara, Gunma
Tsumagoi, Gunma
Tsumagoi Mihara, Gunma
Naganohara Yokokabe, Gunma
A bear was sighted in Kamahara, Tsumagoi Village, Gunma on the morning of 2026-06-22.
Tsumagoi Omae, Gunma
Tsumagoi, Gunma
Tsumagoi Mihara, Gunma
Naganohara, Gunma
Naganohara Yokokabe, Gunma
Around 2:00 PM on June 19, a bear was sighted in Kita-Karuizawa, Naganohara Town.
Naganohara Kitakaruizawa, Gunma
Tsumagoi Saikubo, Gunma
Size: adult and cub
Karuizawa 大字長倉, Nagano
Size: cub (juvenile)
Karuizawa 大字長倉, Nagano
Size: adult
Karuizawa 大字追分, Nagano
Size: Adult
Karuizawa, Nagano
Tsumagoi Imai, Gunma
Tsumagoi Kanbara, Gunma
Naganohara, Gunma
Around 05:30 on 2026-06-16, a bear was sighted in Kita-Karuizawa, Naganohara Town, Gunma Prefecture.
Naganohara Kitakaruizawa, Gunma
Size: Adult
Karuizawa 大字追分, Nagano
Size: Unknown
Karuizawa 大字長倉, Nagano
Tsumagoi, Gunma
Naganohara, Gunma
Naganohara, Gunma
Around 4:00 PM on 2026-06-15, a bear was sighted in Kitasaruigawa, Naganohara Town, Gunma Prefecture.
Naganohara Kitakaruizawa, Gunma
Around 17:45 on 2026-06-14, a bear was sighted in Nagakura, Karuizawa Town, Nagano Prefecture.
Karuizawa 中軽井沢, Nagano
Naganohara Kitakaruizawa, Gunma
Tsumagoi Imai, Gunma
Naganohara, Gunma
Around 14:15 on 2026-06-10, a bear was sighted in Kita-karuizawa, Naganohara Town.
Naganohara Kitakaruizawa, Gunma
Tsumagoi, Gunma
Size: Adult
Karuizawa 大字長倉, Nagano
A bear was sighted in Otsu, Naganohara Town, Gunma Prefecture.
Naganohara Haneo, Gunma
Size: adult (fully grown)
Karuizawa 大字長倉, Nagano
Size: Adult
Karuizawa, Nagano
Size: juvenile
Karuizawa 中軽井沢, Nagano
Nakanojō Namasu, Gunma
Karuizawa, Nagano
Naganohara Okuwa, 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
Naganohara, Gunma
Naganohara, Gunma
Peak activity at 9:00 with 5 incidents
Ursus thibetanus japonicus
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For mountain rescue, call 110 (police). They will coordinate with local rescue teams.
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In the past 30 days, 52 bear sightings were reported within 5 km of the route. The past 7 days account for 6 of them.
The latest sighting was reported 1 day ago near Karuizawa 大字軽井沢, Nagano.
Recent sightings on this route peak around 9:00. Bears are generally most active at dawn and dusk.
This 42 km route runs from Karuizawa to Kusatsu Onsen, passing through Nagano and Gunma. In the past 30 days, 52 bear sightings were reported within 5 km of the route. The past 7 days account for 6 of them. The latest sighting was reported 1 day ago near Karuizawa 大字軽井沢, Nagano. This is an active bear corridor. Drive through with full caution, but rerouting is the safer choice.
