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This 174 km route runs from Isehara to Karuizawa, passing through Kanagawa, 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 5 of them. The latest sighting was reported 1 day ago near Karuizawa 中軽井沢, Nagano.
This is an active bear corridor. Rerouting or rescheduling your hike is strongly advised.
2 places within 1 km of your route, passing through Kanagawa, Nagano, Gunma, Saitama, Tokyo.
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
A bear-like animal was sighted in Shimbori, Hidaka City, and a black shadow appeared on the reporter's car dashcam.
Hidaka 新堀, Saitama
Annaka 松井田町土塩, Gunma
Annaka 松井田町土塩, Gunma
A bear about 1 meter long was sighted in Koma-Hongō, Hidaka City, around 3:00 PM on June 7; no one was injured.
Hidaka 高麗本郷, Saitama
Atsugi Tanazawa, Kanagawa
Size: adult (fully grown)
Karuizawa 大字長倉, 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
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
Size: Adult (fully grown)
Karuizawa 大字長倉, Nagano
Size: adult (fully grown)
Karuizawa 大字長倉, Nagano
Size: adult
Karuizawa 大字長倉, Nagano
Around 4:00 PM on May 28, a bear was sighted in Nagakura, Karuizawa Town.
Karuizawa 中軽井沢, Nagano
Annaka 秋間みのりが丘, Gunma
Size: Adult
Karuizawa 大字長倉, Nagano
Size: Adult (fully grown)
Karuizawa 大字追分, Nagano
Around 5 PM on 2026-05-25, a bear was sighted in Oiwake, Karuizawa Town, Nagano Prefecture.
Karuizawa 大字追分, Nagano
At approximately 6:00 PM on May 22, 2026 (Reiwa 8), there was a sighting of an animal believed to be a bear in the river near Matsueda Bridge in Narahara-machi, Hachioji City.
Hachioji Yotsuyamachi, Tokyo
Around 6:00 PM on 2026-05-22, an animal believed to be a bear was sighted in Naranohara-cho, Hachioji City, Tokyo.
Hachioji, Tokyo
Size: adult
Karuizawa 軽井沢, Nagano
Tomioka 妙義町諸戸, Gunma
At approximately 5:30 a.m. on May 17, there was a report of an animal believed to be a bear in the vicinity of 825, Kabecho 1-chome, Ome City.
Ōme Kabemachi, Tokyo
Peak activity at 17:00 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, 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 1 day ago near Karuizawa 中軽井沢, Nagano.
Recent sightings on this route peak around 17:00. Bears are generally most active at dawn and dusk.
This 174 km route runs from Isehara to Karuizawa, passing through Kanagawa, 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 5 of them. The latest sighting was reported 1 day ago near Karuizawa 中軽井沢, Nagano. This is an active bear corridor. Rerouting or rescheduling your hike is strongly advised.
