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This 306 km route runs from Narashino to Niigata Prefectural Museum of Modern Art, passing through Chiba, Niigata, Gunma, Saitama, and Tokyo. In the past 30 days, 45 bear sightings were reported within 5 km of the route. The past 7 days account for 7 of them. The latest sighting was reported 1 day ago near Nagaoka, Niigata.
This is an active bear corridor. Drive through with full caution, but rerouting is the safer choice.
11 places within 1 km of your route, passing through Chiba, Niigata, Gunma, Saitama, Tokyo.
Discovered signs/traces of footprints
Nagaoka, Niigata
There were bear tracks (footprints) in a rice field about 200 meters toward the mountain from the Sawashimojo district office.
Nagaoka, Niigata
I sighted one bear about 1 m in body length moving within the ski resort slopes.
Minamiuonuma, Niigata
Black bear on the side of the road, then ran up into the brush
Yuzawa, Niigata
On 2026-07-12 in Oana, Minakami Town, Gunma Prefecture, a bear was sighted.
Minakami Oana, Gunma
While driving on National Route 17, observed one bear. It was moving westward.
Yuzawa, Niigata
Bear tracks found in a rice paddy. Direction of travel unknown.
Uonuma, Niigata
One bear sighted. Crossed National Route 17 heading south.
Uonuma, Niigata
I sighted two cubs of unknown body length entering the mountain.
Minamiuonuma, Niigata
Around 13:00 on July 7, one bear (about 50 cm in body length) was sighted very close to a house in Shimojima, Uonuma City, Niigata.
Uonuma, Niigata
Three bears—a mother and two cubs—were sighted at the former Nunoba Ski Resort slope. Their subsequent movements are unknown.
Yuzawa, Niigata
One bear was sighted near the Kan-Etsu Expressway Tsuchitaru parking area.
Yuzawa, Niigata
Around 10:30 on July 6, a bear was sighted in Shimozu, Minakami Town, Gunma Prefecture.
Minakami Shimozu, Gunma
Observed a cub heading toward the mountain direction (west side)
Nagaoka, Niigata
One bear, about 0.6 meter long, was sighted beside a prefectural road in Kawaguchi Tamugiyama, Nagaoka City.
Nagaoka, Niigata
One bear was sighted near Tanigohashi Bridge. It was moving north.
Yuzawa Tsuchidaru, Niigata
Observed one bear about 0.7 m in body length entering the brush from the municipal road.
Minamiuonuma, Niigata
One bear, about 0.6 meters long, was sighted in Kokai-cho, Minamiuonuma City, Niigata Prefecture.
Minamiuonuma, Niigata
Observed one bear about 0.7 m in body length moving from the International University toward the highway.
Minamiuonuma, Niigata
One bear, about 0.7 meters long, was sighted in the Komakiyama area of Minamiuonuma City.
Minamiuonuma, Niigata
Around 8:00 on July 4, a bear was sighted in Shikanosawa, Minakami Town, Gunma Prefecture.
Minakami Yoshimoto, Gunma
Shibukawa 北牧, Gunma
Spotted a Class 1 bear while traveling on National Route 17. Subsequent movement route is unknown.
Yuzawa Kandatsu, Niigata
Observed one bear crossing National Route 291 from east to west. It moved toward the western mountains.
Uonuma, Niigata
Around 4:50 PM on June 30, a bear was sighted in Agagawa, Minakami Town, Gunma Prefecture.
Minakami, Gunma
Around 4:05 PM on 2026-06-28, one bear was sighted in Anogawa, Minakami Town, Gunma Prefecture.
Minakami, Gunma
Around 08:30 on 2026-06-28, a bear was sighted in Shibukawa, Shibukawa City, Gunma Prefecture.
Shibukawa 渋川, Gunma
One bear was sighted near the former Tsuchitaru Ski Resort.
Yuzawa, Niigata
I sighted one bear about 1 meter in body length entering the mountain.
Minamiuonuma, Niigata
I sighted one bear of unknown body length running toward the Botaniyama direction.
Minamiuonuma, Niigata
One bear about 80 cm long was sighted in Misashima, Minamiuonuma City.
Minamiuonuma, Niigata
I observed one bear about 0.8 m in body length crossing National Route 291 and entering toward Mt. Sakado.
Minamiuonuma, Niigata
Showa Morishita, Gunma
At around 7:00 on 2026-06-24, one bear was sighted on the Kanetsu Expressway in Yanagikoshinden, Minamiuonuma City, Niigata Prefecture.
Minamiuonuma, Niigata
Discovered bear footprints and signs of crops having been damaged in a field.
Minamiuonuma, Niigata
The automatic feeder for the koi was eaten (its food was taken).
Nagaoka, Niigata
Discovered bear tracks while doing farm work.
Nagaoka, Niigata
Discovered bear tracks while on the way to cultivate the field
Nagaoka, Niigata
Bear claw marks discovered on tree
Uonuma, Niigata
I sighted one bear about 1 m in body length on the shoulder of National Route 291 near the Uono River.
Minamiuonuma, Niigata
Found bear tracks of unknown body length in the field.
Minamiuonuma, Niigata
Shibukawa 赤城町棚下, Gunma
One bear (body length unknown) was sighted while traveling on the municipal road Matsukawa-Nakako-Gawara Line. Its subsequent movement route is unknown.
Yuzawa Tsuchidaru, Niigata
Found bear tracks in the rice paddy.
Minamiuonuma, Niigata
Heard the vocalizations of an animal believed to be a bear.
Minamiuonuma, Niigata
Peak activity at 16:00 with 8 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, 45 bear sightings were reported within 5 km of the route. The past 7 days account for 7 of them.
The latest sighting was reported 1 day ago near Nagaoka, Niigata.
Recent sightings on this route peak around 16:00. Bears are generally most active at dawn and dusk.
This 306 km route runs from Narashino to Niigata Prefectural Museum of Modern Art, passing through Chiba, Niigata, Gunma, Saitama, and Tokyo. In the past 30 days, 45 bear sightings were reported within 5 km of the route. The past 7 days account for 7 of them. The latest sighting was reported 1 day ago near Nagaoka, Niigata. This is an active bear corridor. Drive through with full caution, but rerouting is the safer choice.
