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This 294 km route runs from Tomi to Asahi, passing through Nagano, Chiba, Gunma, Ibaraki, and Saitama. In the past 30 days, 25 bear sightings were reported within 5 km of the route. The past 7 days account for 4 of them. The latest sighting was reported 3 days ago near Karuizawa, Nagano.
At this density of recent sightings, be ready to brake at any moment and avoid stopping in flagged stretches.
5 places within 1 km of your route, passing through Nagano, Chiba, Gunma, Ibaraki, Saitama.
Size: Adult
Karuizawa, Nagano
Fukaya, Saitama
Size: Unknown
Karuizawa 軽井沢東, Nagano
Two bear-like animals were reportedly sighted in Musashino, Fukaya City.
Fukaya 緑台, Saitama
Annaka 上後閑, Gunma
A bear was sighted in Kamigokan, Annaka City, Gunma Prefecture, on 2026-08-01.
Annaka 上後閑, Gunma
Around 1:00 on July 31, a bear was sighted in Niibori, Matsuida-machi, Annaka City.
Annaka 松井田町新堀, Gunma
Annaka 松井田町新堀, Gunma
Size: Adult (fully grown)
Karuizawa, Nagano
Annaka 松井田町二軒在家, Gunma
A bear was sighted in Matsuidamachi Matsuida, Annaka City, Gunma Prefecture, around 12:45 on July 30.
Annaka 松井田町松井田, Gunma
Annaka 松井田町人見, Gunma
A juvenile bear about 1 meter long was spotted along Prefectural Route 43 (Momiji Line) of the Karuizawa–Shimonita route. The mother bear could not be found, but is believed to be hiding nearby.
Shimonita, Gunma
A bear was sighted in Goryo, Matsuidamachi, Annaka City around 8:00 on 2026-07-27.
Annaka, Gunma
Annaka, Gunma
Size: adult
Karuizawa, Nagano
Annaka 松井田町土塩, Gunma
Around 8:20 AM on 2026-07-24, one bear was sighted in Hatachi, Karuizawa Town, Nagano Prefecture.
Karuizawa 大字発地, Nagano
Size: juvenile
Karuizawa, Nagano
Size: Adult
Karuizawa 大字発地, Nagano
A bear was sighted in Mogusa, Karuizawa Town, Nagano Prefecture, around 7:15 a.m. on July 21.
Karuizawa 大字茂沢, Nagano
Size: Adult
Karuizawa 大字茂沢, Nagano
Annaka 松井田町行田, Gunma
One bear was seen moving in Matsuida-cho Gyoda, Annaka City, Gunma.
Annaka 松井田町行田, Gunma
Size: adult (fully grown)
Karuizawa, Nagano
Peak activity at 8:00 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, 25 bear sightings were reported within 5 km of the route. The past 7 days account for 4 of them.
The latest sighting was reported 3 days ago near Karuizawa, Nagano.
Recent sightings on this route peak around 8:00. Bears are generally most active at dawn and dusk.
This 294 km route runs from Tomi to Asahi, passing through Nagano, Chiba, Gunma, Ibaraki, and Saitama. In the past 30 days, 25 bear sightings were reported within 5 km of the route. The past 7 days account for 4 of them. The latest sighting was reported 3 days ago near Karuizawa, Nagano. At this density of recent sightings, be ready to brake at any moment and avoid stopping in flagged stretches.
