Shinjo, Okayama Pref., Japan · Sunday, October 25, 2026

Fixed Distance 50 mi

Forestrail Shinjo-Hiruzen

7 days to go
68 km Distance
3,200 m Climbing
8.2 Grit · Hardcore
35.1793° N, 133.5679° E © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 47 m / km Mountain. Significant climbing. Steep sections will require power hiking.
Time limit 14 hours 12:21 min/km average. Comfortable. Sustained running. Long aid-station stops will cost you. More forgiving than 68% of 50 mi races. Measured against 477 races of the same distance. Cut-off calculator →
Field size ~56 Small. Long stretches with nobody in sight.

DUV results for the 2024 edition (68km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, October

Daytime high 19°C
Night low 10°C
Rainfall Showers likely
Daylight 11 h 00 m of light

Regional 2001-2020 average for October — NASA POWER, grid elevation 396 m. Not a forecast.

Results history

Year Race Finishers Men's winner Women's winner
2024 68km 56 Terunobu Kurokawa · 07:02:37 Itsuko Uemiya · 08:43:36
2023 67km 158 Fujio Ichige · 08:25:10 Sachie Akamatsu · 10:23:57
2022 75km 85 Akira Homma · 08:29:53 Noe Nishio · 10:26:17
2018 75km 176 Sota Ogawa · 08:49:50 Yuki Tsubone · 11:31:19
2017 74.5km 232 Teruki Tanikawa · 08:23:59 Yasuko Natsume · 11:03:00
2016 73km 90 Sho Aida · 08:27:42 Noe Nishio · 11:50:00

The field shrank 65% between 2023 (158) and 2024 (56). 7% of the 2024 field were women.

DUV results for the 2024 edition (68km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Course notes

  • terrain This is a mountain course. Poles are highly recommended for the sustained climbs.
  • gear With trail terrain, choose a shoe with moderate cushioning for optimal performance.

Gear for this race

Chosen for 68 km of trail with 3,200 m of ascent.

All gear guides →

Overview

Forestrail Shinjo-Hiruzen is a 68-kilometer trail race in Shinjo, Okayama Pref., Japan, featuring 3200 meters of elevation gain. That profile concentrates 47.1 meters of climb into every kilometer, demanding relentless uphill leg strength and technical descending across the route.

With a 14-hour time limit, runners must maintain a cutoff pace of 12.4 minutes per kilometer. This time standard is more generous than 68% of 50mi cut-offs and tighter than 32%, providing a manageable buffer against the heavy vertical profile.

The 2024 edition saw 56 finishers, placing the event in a peer bracket where it is bigger than 55% of 50mi fields and smaller than 44%. First held in 2016, the race has built a track record across 6 editions.

Similar races

Other 50 mi trail ultras, closest in distance first.