Yamanouchi,Nagano Pref., Japan · Saturday, July 4, 2026

Fixed Distance 50K

KTF Trail running race - Rockin Bear

Race completed
48 km Distance
not publishedn/a Climbing
2.4 est Grit · Entry level

Calculated from 48 km alone — the organiser has not published an elevation profile. Read 2.4 as a floor, not a verdict.

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36.7446° N, 138.4127° E © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Time limit 10 hours 12:30 min/km average. Generous. Walkable throughout for most of the field. Climbing is unpublished, so this pace is a ceiling on the effort, not a measure of it. About average for a 50K. Measured against 999 races of the same distance. Cut-off calculator →
Field size ~442 Large. Rarely out of sight of another runner.

DUV results for the 2025 edition (48km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, July

Daytime high 26°C
Night low 17°C
Rainfall Wet — expect rain
Daylight 14 h 37 m of light

Regional 2001-2020 average for July — NASA POWER, grid elevation 875 m. Not a forecast.

Results history

Year Race Finishers Men's winner Women's winner
2025 48km 442 Toshiki Funayama · 03:56:17 Keiko Sugamori · 05:09:31
2024 48km 502 Yutaro Yokouchi · 04:05:52 Kanako Edamoto · 05:05:24
2023 50km 427 Yutaro Yokouchi · 03:56:43 Kanako Edamoto · 05:02:29
2022 48km 300 Yuichi Miura · 04:17:05 Sayuri Orito · 06:11:41

The field shrank 12% between 2024 (502) and 2025 (442). 14% of the 2025 field were women.

DUV results for the 2025 edition (48km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

The Aid Station

Course-specific beta from the community

👟 gear

With trail terrain, choose a shoe with moderate cushioning for optimal performance.

By UltraHub Expert

Gear for this race

Chosen for 48 km of trail.

  • Trail Running Shoes 48 km of trail — cushioning that is still there in the last quarter.
  • Race Nutrition 48 km of self-supported fuelling between aid stations.
  • Hydration Vests Flask capacity for 48 km, without the bounce.
  • GPS Watches Battery life first — a 48 km day outlasts most full-GPS modes.

La Sportiva

Prodigio Pro

$225 ★★★★★ 4.6

Salomon

Sense Ride 5

★★★★★ 4.5

Tailwind

Endurance Fuel

All-in-one calorie and electrolyte drink mix. 200 calories per serving.

$25 ★★★★★ 4.8

Nathan

VaporKrar 12L

12L race vest co-designed with ultra champion Rob Krar, with insulated bladder pocket.

$170 ★★★★★ 4.6

Garmin

Enduro 3

Ultra-endurance GPS watch with solar charging and 300+ hour battery in GPS mode.

$900 ★★★★★ 4.8
All gear guides →

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