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  4. Sunpu Castle to Ren Kagaku Hiking Route

Sunpu Castle to Ren Kagaku Hiking Route

Hiking · Very High Risk · 247 km · 2d 3h 13m · 2 stops · 50 sightings · Saved August 9, 2026 · Last updated 19 hours ago
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Saves as a new trip plan. The original stays as-is.

3
Incidents in last 7 days
50
Incidents in last 30 days
1 day ago
Latest

Safety Summary

This 247 km route runs from Sunpu Castle to Ren Kagaku, passing through Shizuoka, Nagano, and Yamanashi. In the past 30 days, 50 bear sightings were reported within 5 km of the route. The past 7 days account for 3 of them. The latest sighting was reported 1 day ago near Azumino 豊科光, Nagano.

This is an active bear corridor. Rerouting or rescheduling your hike is strongly advised.

Your Route

Route Profile

Highlights Along Your Route (10)

10 places within 1 km of your route, passing through Shizuoka, Nagano, Yamanashi.

Sunpu Castle
Low Risk

Sunpu Castle

Shizuoka

72 incidents

Sumpu Castle Park
Low Risk

Sumpu Castle Park

Shizuoka

72 incidents

Seiken-ji Temple
Low Risk

Seiken-ji Temple

Shizuoka

131 incidents

Fujisan Hongū Sengen Taisha
Low Risk

Fujisan Hongū Sengen Taisha

Shizuoka

259 incidents

Otodome Falls
Low Risk

Otodome Falls

Shizuoka

334 incidents

Shiraito Falls
Low Risk

Shiraito Falls

Shizuoka

338 incidents

Suwa Garasunosato Museum
Low Risk

Suwa Garasunosato Museum

Nagano

259 incidents

Tenryū River
Low Risk

Tenryū River

Nagano

282 incidents

Sunpu Castle
Low Risk

Sunpu Castle

Shizuoka

72 incidents

Sumpu Castle Park
Low Risk

Sumpu Castle Park

Shizuoka

72 incidents

Seiken-ji Temple
Low Risk

Seiken-ji Temple

Shizuoka

131 incidents

Fujisan Hongū Sengen Taisha
Low Risk

Fujisan Hongū Sengen Taisha

Shizuoka

259 incidents

Otodome Falls
Low Risk

Otodome Falls

Shizuoka

334 incidents

Shiraito Falls
Low Risk

Shiraito Falls

Shizuoka

338 incidents

Suwa Garasunosato Museum
Low Risk

Suwa Garasunosato Museum

Nagano

259 incidents

Tenryū River
Low Risk

Tenryū River

Nagano

282 incidents

Route Timeline

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S
Sunpu Castle, Shizuoka
Very High Risk 247 km 2d 3h 13m 50 sightings within 5 km

Size: Unknown

Azumino 豊科光, Nagano

Official ·1 day ago
Azumino, Nagano

Size: juvenile

Azumino, Nagano

Official ·4 days ago
Azumino 穂高牧, Nagano

Size: adult

Azumino 穂高牧, Nagano

Official ·5 days ago
Show 47 more

Size: Adult

Azumino 穂高有明, Nagano

Official ·1 week ago
Azumino, Nagano

Size: Adult

Azumino, Nagano

Official ·1 week ago
Shiojiri Daimon, Nagano

One bear was found inside a capture cage installed in Soga, Shiojiri City, and was culled by a local hunting association member.

Shiojiri Daimon, Nagano

News ·1 week ago
Ōmachi, Nagano

Size: Unknown

Ōmachi, Nagano

Official ·1 week ago
Hokuto Mukawacho-Yanagisawa, Yamanashi

Hokuto Mukawacho-Yanagisawa, Yamanashi

Official ·1 week ago

A resident living in the Kurosawa area of Takekawa Town reported that they appear in security camera footage. The person entered the yard from the Takekawayamataka Line 35 city road on the south side of their house and walked north through the yard.

Hokuto Mukawacho-Kurosawa, Yamanashi

Official ·1 week ago
Azumino 穂高柏原, Nagano

One bear was sighted in Horigane Karasawa, Azumino City, around 10:35 on 2026-07-30.

Azumino 穂高柏原, Nagano

News ·1 week ago
Azumino 明科中川手, Nagano

A bear was sighted in Akashina Nakagawate, Azumino City.

Azumino 明科中川手, Nagano

News ·1 week ago
Minobu Shimotanbara, Yamanashi

Minobu Shimotanbara, Yamanashi

Official ·1 week ago
Ōmachi Yashiro, Nagano

Size: Unknown

Ōmachi Yashiro, Nagano

Official ·1 week ago
Ōmachi, Nagano

Size: Unknown

Ōmachi, Nagano

Official ·1 week ago
Hokuto Mukawacho-Yanagisawa, Yamanashi

Hokuto Mukawacho-Yanagisawa, Yamanashi

Official ·1 week ago
Hokuto Mukawacho-Yamataka, Yamanashi

Hokuto Mukawacho-Yamataka, Yamanashi

Official ·1 week ago
Azumino 穂高有明, Nagano

Size: adult (fully grown)

Azumino 穂高有明, Nagano

Official ·1 week ago
Azumino 穂高有明, Nagano

One bear was sighted in Hotaka Ariake, Azumino City.

Azumino 穂高有明, Nagano

News ·2 weeks ago
Ōmachi, Nagano

Size: Unknown

Ōmachi, Nagano

Official ·2 weeks ago
Ōmachi, Nagano

Size: Unknown

Ōmachi, Nagano

Official ·2 weeks ago
Azumino 穂高有明, Nagano

Size: Unknown

Azumino 穂高有明, Nagano

Official ·2 weeks ago
Ōmachi, Nagano

Size: Unknown

Ōmachi, Nagano

Official ·2 weeks ago
Azumino, Nagano

Size: Adult

Azumino, Nagano

Official ·2 weeks ago

Size: cub/juvenile

Ōmachi, Nagano

Official ·2 weeks ago
Ōmachi, Nagano

Around 3:15 PM on 2026-07-27, a bear was sighted in Taira, Omachi City, Nagano Prefecture.

Ōmachi, Nagano

News ·2 weeks ago
Fujinomiya 安居山, Shizuoka

Fujinomiya 安居山, Shizuoka

Official ·2 weeks ago
Fujinomiya 羽鮒, Shizuoka

Around 11:50 on 2026-07-26, a bear was sighted in Hachibuna, Fujinomiya City, Shizuoka Prefecture.

Fujinomiya 羽鮒, Shizuoka

News ·2 weeks ago

Around 7:15 on July 23, a bear was sighted in Yashiro, Omachi City.

Ōmachi Yashiro, Nagano

News ·2 weeks ago
Ōmachi Yashiro, Nagano

Size: Adult

Ōmachi Yashiro, Nagano

Official ·2 weeks ago

Size: adult (fully grown)

Ōmachi, Nagano

Official ·2 weeks ago
Azumino, Nagano

Size: adult (fully grown)

Azumino, Nagano

Official ·2 weeks ago
Azumino 穂高有明, Nagano

Around 00:30 on 2026-07-22, a bear was sighted in Hotakaariake, Azumino City, Nagano Prefecture.

Azumino 穂高有明, Nagano

News ·2 weeks ago
Ōmachi, Nagano

Size: Adult

Ōmachi, Nagano

Official ·3 weeks ago

One bear appeared on the trail from Jii-ga-take toward Taneike Sanso. Some climbers turned back. Later the bear appeared on the descent route from Taneike Sanso toward Ogizawa. Descending was difficult, but Taneike Sanso staff drove the bear away. Those camping in tents were told by the Taneike Sanso staff to stop and instead stayed overnight in the mountain hut.

Ōmachi, Nagano

3 weeks ago
Fujinomiya 羽鮒, Shizuoka

Around 22:45 on 2026-07-19, a bear was sighted in Hahane, Fujinomiya City, Shizuoka Prefecture.

Fujinomiya 羽鮒, Shizuoka

News ·3 weeks ago
Azumino 穂高有明, Nagano

Around 21:00 on 2026-07-19, a bear was sighted in Hotaka Ariake, Azumino City, Nagano Prefecture.

Azumino 穂高有明, Nagano

News ·3 weeks ago
Azumino 穂高有明, Nagano

Size: Unknown

Azumino 穂高有明, Nagano

Official ·3 weeks ago

Fujinomiya 羽鮒, Shizuoka

Official ·3 weeks ago
Fujinomiya 安居山, Shizuoka

Also sighted on July 26.

Fujinomiya 安居山, Shizuoka

Official ·3 weeks ago
Minobu Miyaki, Yamanashi

Minobu Miyaki, Yamanashi

Official ·3 weeks ago
Matsumoto Nakayama, Nagano

Size: Unknown

Matsumoto Nakayama, Nagano

Official ·3 weeks ago
Azumino 明科七貴, Nagano

Size: juvenile

Azumino 明科七貴, Nagano

Official ·3 weeks ago
Ōmachi Omachi, Nagano

Size: juvenile

Ōmachi Omachi, Nagano

Official ·3 weeks ago
Matsumoto Arigasaki, Nagano

Size: juvenile

Matsumoto Arigasaki, Nagano

Official ·3 weeks ago
Ōmachi Omachi, Nagano

Size: Adult

Ōmachi Omachi, Nagano

Official ·3 weeks ago
Matsumoto Arigasaki, Nagano

A bear was sighted in Arigasaki, Matsumoto City.

Matsumoto Arigasaki, Nagano

News ·3 weeks ago
Fujinomiya 羽鮒, Shizuoka

A bear was sighted in Habanu, Fujinomiya City.

Fujinomiya 羽鮒, Shizuoka

News ·3 weeks ago
Fujinomiya 安居山, Shizuoka

Fujinomiya 安居山, Shizuoka

Official ·1 month ago
Fujinomiya 羽鮒, Shizuoka

A bear sighting had also been reported in the Habuna area of Fujinomiya City on July 13.

Fujinomiya 羽鮒, Shizuoka

News ·1 month ago
Fujinomiya 安居山, Shizuoka

Around 08:50 on 2026-07-13, a bear was sighted in Aoyama, Fujinomiya City, Shizuoka Prefecture.

Fujinomiya 安居山, Shizuoka

News ·1 month ago
G
Ren Kagaku, Nagano
Total Distance: 247 km

When Are Bears Most Active?

Peak activity at 10:00 with 4 incidents

Asian black bears on your route

Asian Black Bear

Asian Black Bear

Ursus thibetanus japonicus

Range
Honshu, Shikoku
Size
80–120 kg
Active
Dawn & dusk

Sharing space safely

  • ·Make noise as you walk; carry bear spray
  • ·If charged, stand firm and use the spray
  • ·If contact happens, resist firmly. They retreat when met with resistance
  • ·Don't climb. They climb better than you

Safety Checklist

Hiking in bear country

Safety picks and trail essentials, top-rated on Amazon and Rakuten.

Emergency Contacts

110
Police
119
Fire/Ambulance

For mountain rescue, call 110 (police). They will coordinate with local rescue teams.

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Frequently Asked Questions About This Route

How many bear sightings are on this route?

In the past 30 days, 50 bear sightings were reported within 5 km of the route. The past 7 days account for 3 of them.

When and where was the most recent bear sighting near this route?

The latest sighting was reported 1 day ago near Azumino 豊科光, Nagano.

What time of day are bears most active here?

Recent sightings on this route peak around 10:00. Bears are generally most active at dawn and dusk.

Is this route safe to travel right now?

This 247 km route runs from Sunpu Castle to Ren Kagaku, passing through Shizuoka, Nagano, and Yamanashi. In the past 30 days, 50 bear sightings were reported within 5 km of the route. The past 7 days account for 3 of them. The latest sighting was reported 1 day ago near Azumino 豊科光, Nagano. This is an active bear corridor. Rerouting or rescheduling your hike is strongly advised.

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