Trailrace logo
Find your race Upcoming Find a Qualifier
Search Dashboard Saved Races Calendar
Trailrace logo

Helping the trail running community discover, plan for, and thrive at the world's best trail races.

Find Races

  • Search all trail races
  • Explore collections
  • Race series
  • Race qualifiers

Races by Location

  • Colorado trail races
  • California trail races
  • Utah trail races
  • Arizona trail races
  • Washington trail races
  • All US trail races

Lottery Odds

  • Western States 100
  • Hardrock 100
  • High Lonesome 100
  • UTMB
  • All calculators

Company

  • About
  • Roadmap
  • Terms of service
  • Privacy policy

Feedback

  • Send Feedback
  • Feature Requests
  • Report a Bug

© 2026 Trailrace.co. All rights reserved.

Built on bad decisions in Boulder, CO.

Okushinano 50K

Basic Listing
  1. Okushinano100 Race Committee
  2. 2026 Edition

A demanding mountain loop through the beech forests and highlands of Northern Nagano

Directions
This event took place on June 06, 2026

Nearby races

Other trail races within 165 miles

Okushinano 100K

Okushinano 100K

100K
Kijimadaira, Nagano, JP
Jun 6, 2026
62.14 miles
15,750 ft gain
Loop
Crew
Pacers
Dropbags
Mt. Fuji 100
Lottery
Qualifier Req

Mt. Fuji 100

100 Mile
Fujiyoshida, Yamanashi, JP
Apr 24, 2026
103.77 miles
25,370 ft gain
Point to Point
Crew
Dropbags
94 mi away
Kaga Spa Trail Endurance 100K

Kaga Spa Trail Endurance 100K

100K
Kaga, Ishikawa, JP
Jun 20, 2026
60.52 miles
16,800 ft gain
Point to Point
Crew
Dropbags
110 mi away
Lake Biwa 100
Lottery
Qualifier Req

Lake Biwa 100

100 Mile
Komono, Mie, JP
Oct 30, 2026
105.63 miles
30,460 ft gain
Point to Point
Crew
Dropbags
165 mi away
All trail races in Japan→
June 06, 2026
Saturday 11:30am GMT+9 start
Kijimadaira, Nagano
Japan
50 km
Loop Course
2,499 m
Elevation Gain
Historical weather
53°F / 69°FLo/Hi Temp
51°F / 70°FFeels Like
76%Cloud Cover
0% (0.18 in)Precipitation
8 mphWind Speed
76%Humidity
4:27 AMSunrise
7:02 PMSunset
Open Registration
No lottery
No Service Requirement
Does not require trail or volunteer work
No Qualifier
No qualifier race required
Challenging
Some ultra experience recommended
Links
WebsiteInstagramFacebook
2021
Established
400
Field Size
76%
Finish Rate

What Makes It Great

A 50km mountain loop through the Kijimadaira area featuring 2,500m of elevation gain and three cutoff checkpoints. The course visits the Kayanodaira plateau with its beech forests and pastoral landscapes before returning to the Cupid of Romance Snow Resort. A solid mountain ultra challenge requiring trail experience, earning 3 ITRA points.

Difficulty

Intermediate
6/10

Some ultra experience recommended

Steep Climbing
Technical Terrain
Variable Weather

Okushinano 50K

Kijimadaira, Nagano, JapanJune 06, 2026

June 06, 2026
Course map for Okushinano 50K
DistDistance50 km
GainElevation Gain2,499.4 m
LimitCutoff10.5 h
Steep ClimbingVariable Weather

Entry Timeline

Race DayJune 06, 2026

Lottery

This event uses open registration - no lottery entry required.

Qualifier

This event does not require a qualifier for entry.

Service Requirement

This race does not have a service requirement for entry.
50.0 km
Distance
Loop
Route
10h30m
Cutoff Time
1,103 m
Average Elevation
2,499 m
Total Ascent
2,499 m
Total Descent
1,709 m
High Point
479 m
Low Point
Course map
Launch Course Explorer

Aid Stations

LocationkmElevation
Start
Start
0.0605 m
Kayanodaira Water Aid
Aid Station
13.01,438 m
Kayanodaira 1
Aid Station
23.01,541 m
Kayanodaira 2
Aid Station
33.01,541 m
Nukasen
Aid Station
47.0535 m
Finish
Finish
50.0605 m

Sign in to see cutoffs, crew access, drop bags, and services for every aid station.

No on-site camping available

Crew Access Points

Pacer Rules

No Pacers Allowed

Crew Rules

  • Crew and spectator access at the start/finish venue and designated support points. No access at Nukasen Aid Station.
Daylight
14h 35m
4:27 AM7:02 PM
69°F / 53°F
Feels like 70°F / 51°F
Temperature Hi/Lo
0% (0.18 in)
Precipitation
8 mph
Wind
76%
Humidity
76%
Cloud Cover
Based on historical averages for June 06
Rapid Weather Changes

June mountain weather can bring sudden rain. Rain gear is mandatory.

Wildlife

Black bears are present in the course area. A bear bell is mandatory gear.

Gear Rules

Trekking poles allowed

Required Gear

  • Mobile phone (Must be the number registered at time of entry)
  • Portable cup
  • Water and food (Sufficient for each runner)
  • Survival blanket (At least 130cm × 200cm)
  • Taping tape
  • Course map (Download from event website or use smartphone/watch with GPX uploaded)
  • Rain jacket with hood (Waterproof/breathable material with seam-taped seams)
  • First aid kit (Bandage, antiseptic, etc.)
  • Headlamp (With spare batteries)
  • Bear bell

Recommended Gear

  • Rain pants
  • Trekking poles
  • Gloves
  • Flashing or reflector light
  • Venom extractor (poison remover)

Videos from other Okushinano 100 events

奥信濃100 2025 公式ハイライト (2025 Official Highlights)
奥信濃100 2025 公式ハイライト (2025 Official Highlights)
Okushinano 100K
ALP SKI TEAM•2025
2024 奥信濃100 ハイライト動画 (2024 Highlight Video)
2024 奥信濃100 ハイライト動画 (2024 Highlight Video)
Okushinano 100K
ALP SKI TEAM•2024
【奥信濃100】Seeking Blossoms — Runner's Perspective 100km
【奥信濃100】Seeking Blossoms — Runner's Perspective 100km
Okushinano 100K
Sakura Inoue (井上 咲楽)•2024

Reviews

to write a review.

No reviews for this event yet. Be the first to share your experience!