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  4. Otsuki to Koshu Hiking Route

Otsuki to Koshu Hiking Route

Hiking · Moderate Risk · 14 km · 2 stops · 7 sightings · Saved May 4, 2026 · Last updated 3 hours ago
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1
Incidents in last 7 days
7
Incidents in last 30 days
4 days ago
Latest

Safety Summary

This 14 km route runs from Otsuki to Koshu within Yamanashi. In the past 30 days, 7 bear sightings were reported within 5 km of the route. The past 7 days account for 1 of them. The latest sighting was reported 4 days ago near Tsuru Ohata, Yamanashi.

With activity this close, make noise as you hike, carry bear spray, and avoid the forest at dawn and dusk.

Your Route

Route Profile

Route Timeline

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S
Otsuki, Yamanashi
Moderate Risk 14 km 7 sightings within 5 km

Tsuru Ohata, Yamanashi

Official ·4 days ago
Tsuru Ohata, Yamanashi

Tsuru Ohata, Yamanashi

Official ·1 week ago
Tsuru Ohata, Yamanashi

Tsuru Ohata, Yamanashi

Official ·2 weeks ago
Show 4 more

Observed for about one second a black, rounded, quadrupedal animal about the size of a medium dog—possibly a bear cub or a wild boar—running roughly 30 meters uphill into the brush. Location: where the Onnazaka and Sawa trails merge on Mt. Takagawayama.

Otsuki Hatsukarimachi-Shimohatsukari, Yamanashi

3 weeks ago
Otsuki, Yamanashi

From the hiking trail beside the old Koshu-kaido Sasago Tunnel, near Sasago Pass on the trail toward Mt. Sasago Karigaharasuri, I encountered a cub about 50 cm long approximately 50 meters ahead of my position. The cub ran up the slope on the left side of the trail, toward the Enzan side, from Sasago Pass and disappeared. I watched the same spot for about five minutes but did not see any adult bear.

Otsuki, Yamanashi

3 weeks ago

A bear was sighted in Sasagocho Yoshikubo, Otsuki City, around 2:10 PM on May 26.

Otsuki Sasagomachi-Yoshikubo, Yamanashi

News ·1 month ago
Otsuki Sasagomachi-Shirano, Yamanashi

Otsuki Sasagomachi-Shirano, Yamanashi

Official ·1 month ago
G
Koshu, Yamanashi
Total Distance: 14 km

When Are Bears Most Active?

Peak activity at 14:00 with 3 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, 7 bear sightings were reported within 5 km of the route. The past 7 days account for 1 of them.

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

The latest sighting was reported 4 days ago near Tsuru Ohata, Yamanashi.

What time of day are bears most active here?

Recent sightings on this route peak around 14:00. Bears are generally most active at dawn and dusk.

Is this route safe to travel right now?

This 14 km route runs from Otsuki to Koshu within Yamanashi. In the past 30 days, 7 bear sightings were reported within 5 km of the route. The past 7 days account for 1 of them. The latest sighting was reported 4 days ago near Tsuru Ohata, Yamanashi. With activity this close, make noise as you hike, carry bear spray, and avoid the forest at dawn and dusk.

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