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This 151 km route runs from Karuizawa to Lake Kawaguchi, passing through Nagano and Yamanashi. In the past 30 days, 46 bear sightings were reported within 5 km of the route. The past 7 days account for 9 of them. The latest sighting was reported 2 days ago near Karuizawa 大字発地, Nagano.
This is an active bear corridor. Drive through with full caution, but rerouting is the safer choice.
4 places within 1 km of your route, passing through Nagano, Yamanashi.
Size: Adult
Karuizawa 大字発地, Nagano
Around 8:20 on 2026-07-24, a bear was sighted in Nagakura, Karuizawa Town, Nagano Prefecture.
Karuizawa 中軽井沢, Nagano
Size: Adult
Karuizawa 大字長倉, 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
Size: Unknown
Karuizawa 大字長倉, Nagano
Chuo Asari, Yamanashi
Details unknown
Chuo Asari, Yamanashi
中央市立豊富小学校：お便り内容 件名：クマの目撃情報 配日：2026年7月21日 -本文- 7月19日午後7時50分頃、浅利 付近でクマの目撃情報がありまし た。夏季休業中ですので、ご家庭 で注意喚起をお願いいたします。 ・外出時は、クマ鈴を持参す る。 ・クマを見かけても、絶対に近 づいたり、刺激したりしない。 ・もし見かけたら、静かにその 場を離れ、近くの大人や警察に知 らせる。 安全確保のため、ご理解とご協 力をお願いいたします。
Chuo Kihara, Yamanashi
A bear was sighted in Karuizawa, Karuizawa Town, Nagano.
Karuizawa 大字軽井沢, Nagano
Size: cub (young bear)
Karuizawa 中軽井沢, Nagano
Size: Juvenile
Karuizawa 大字軽井沢, Nagano
Size: cub (young animal)
Karuizawa 大字軽井沢, Nagano
Size: juvenile
Karuizawa 大字長倉, Nagano
Size: adult (fully grown)
Koumi, Nagano
Around 7:00 on July 16, a bear was sighted in Chiyosato, Koumi Town, Nagano Prefecture.
Koumi 大字千代里, Nagano
Size: adult and cub
Karuizawa, Nagano
Size: juvenile
Karuizawa 大字軽井沢, Nagano
Fuefuki, Yamanashi
It looked like a large dog crossed the area, but there was no owner, and I realized it was a wild animal. It was not a boar, deer, or badger. Judging from the size, gait, and silhouette, I think it may have been a young Asiatic black bear (Ursus thibetanus), so I am reporting it. Also, while walking nearby I found a black, glossy, flattened droppings. After examining it, I believe it is likely from a bear.
Karuizawa 大字軽井沢, Nagano
Koshu Katsunumacho-Kamiiwasaki, Yamanashi
Black bear, 1m20 long and 0,7m high. Saw during a hiking from Mitsutogeyama to Kawaguchi Asama Shrine. 20-30 before the haha waterfall.
Fujikawaguchiko, Yamanashi
Fuefuki, Yamanashi
On 2026-07-10 in Shinkoda, Saku City, Nagano, a bear was sighted.
Saku Arakoda, Nagano
Size: adult and cub
Karuizawa 大字追分, Nagano
Fuefuki, Yamanashi
Fuefuki, Yamanashi
Fuefuki, Yamanashi
Size: juvenile
Karuizawa, Nagano
Hokuto Sutamacho-Wakamiko-shinmachi, Yamanashi
Two bears believed to be a parent and child were sighted by a driver in Sutama-cho Wakamiko, Hokuto City.
Hokuto Sutamacho-Wakamiko, Yamanashi
Size: Adult
Karuizawa, Nagano
At around 9:00 AM on July 5, a bear was sighted in Oiwake, Karuizawa Town.
Karuizawa 大字追分, Nagano
Size: juvenile
Karuizawa 中軽井沢, Nagano
Fujikawaguchiko Kawaguchi, Yamanashi
Size: Adult (fully grown)
Karuizawa, Nagano
A bear was sighted in Nagakura, Karuizawa Town.
Karuizawa 中軽井沢, Nagano
Size: Adult
Karuizawa, Nagano
Size: cub
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
Fujikawaguchiko Nagahama, Yamanashi
Size: Adult (fully grown)
Karuizawa, Nagano
Size: juvenile
Karuizawa 大字長倉, Nagano
Size: adult
Karuizawa 大字追分, Nagano
Peak activity at 19:00 with 4 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, 46 bear sightings were reported within 5 km of the route. The past 7 days account for 9 of them.
The latest sighting was reported 2 days ago near Karuizawa 大字発地, Nagano.
Recent sightings on this route peak around 19:00. Bears are generally most active at dawn and dusk.
This 151 km route runs from Karuizawa to Lake Kawaguchi, passing through Nagano and Yamanashi. In the past 30 days, 46 bear sightings were reported within 5 km of the route. The past 7 days account for 9 of them. The latest sighting was reported 2 days ago near Karuizawa 大字発地, Nagano. This is an active bear corridor. Drive through with full caution, but rerouting is the safer choice.
