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Joshu Hotakasan Skyview Trail 138km 2026

Sat, 12 Sep 2026 · Gunma, Japan · 138 km · D+ 8,017 m · 34h time limit

Also known as: JOSHU HOTAKASAN

The longest race of a mountain event centred on Mt. Hotaka, one of Japan's 100 Famous Mountains. It climbs to ridges near the treeline several times and involves long hours including night. Markers about every 1 km show the distance remaining; the event grew out of a mountain race begun in 1990.

The course

The course tops out at 2,153 m (low point 489 m). There are 3 big climbs: 1,492 m around 0–20 km; 1,149 m around 34–41 km; 677 m around 117–126 km. Only about 30% is gentle (under 5% grade); most of it is climbing or descending. In 2025, 42% of starters finished — a tough one. The median finish was about 31 h, through one night.

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Overview

Date
Sat, 12 Sep 2026
Start
04:00
Location
Gunma, Japan
Distance
138 km
Elevation gain
8,017 m
Time limit
34h
ITRA
100M
Official website
skyviewtrail.com/free/course_map_profile

Elevation profile

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Distance (km) across, elevation (m) up. The dotted lines and numbers are the aid stations in the table below. High point 2,153 m · low point 489 m

Aid stations and cutoffs

#DistanceAid stationSegmentCutoff
113.5 kmAid 1A1 川場スキー場第4駐車場13.5 km—
225 kmAid 2W1(1回目・水)11.5 km—
330 kmAid 3A2 ほうだいぎスキー場5 kmDay 1 11:307h 30m
435.5 kmAid 4W1(2回目・水)5.5 kmDay 1 12:508h 50m
539.5 kmAid 5CP 武尊山山頂付近4 kmDay 1 14:1510h 15m
648.5 kmAid 6A3 ほたか牧場9 kmDay 1 17:3013h 30m
761 kmAid 7A4 かたしな高原スキー場12.5 kmDay 1 21:0017h
869.5 kmAid 8W2(水)8.5 km—
976.5 kmAid 9A5 オグナほたかスキー場7 kmDay 2 02:0022h
1092 kmAid 10A6 赤倉橋分岐15.5 kmDay 2 06:0026h
11101.5 kmAid 11W3(水)9.5 km—
12111.5 kmAid 12A7 樹恵里(110km終了選択地点)10 kmDay 2 07:3027h 30m
13117 kmAid 13W4(水)5.5 km—
14123 kmAid 14W5(水)6 kmDay 2 10:0030h
15133 kmAid 15W6(水)10 kmDay 2 13:0033h
F138 kmFinishFINISH 川場村中央公園5 kmDay 2 14:0034h

The small figure under each cutoff is the time from the start. Day 1 is the day of the start.

2025 results

229 starters, 97 finishers (42.4% finish rate). Finish times of those who finished:

Fastest
19h 24m
Top 10%
23h 32m
Top 25%
27h 14m
Median
30h 36m
Top 75%
32h 26m
Top 90%
33h 8m
Last finisher
33h 54m

"Top 25%" means one in four finishers had crossed the line by this time.

Years with a different course or different cutoffs are not directly comparable.

Practice courses

See the course on the Runnable map ↗

Runnable has practice courses on this race's trails, split into sections to run and sections to walk (pages in Japanese).

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Race information as of 2026-09-08

Compiled from each race's official information. Details can change, so always check the race's official website for the latest. Spotted a mistake? Please tell us through the contact form.
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