Fujiyoshida, Yamanashi Pref., Japan · Sunday, April 18, 2027

Fixed Distance 100K

Fuji 5 Lakes Sparta Challenge

182 days away

120 km Distance

not publishedn/a Climbing

6.0 est Grit · Hardcore

Calculated from 120 km alone — the organiser has not published an elevation profile. Read 6.0 as a floor, not a verdict.

35.4875° N, 138.8078° E © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Time limit 12 hours 6:00 min/km average. Tight. You are racing the clock from the start. Climbing is unpublished, so this pace is a ceiling on the effort, not a measure of it. Among the tightest 100K cut-offs we track. Measured against 226 races of the same distance. Cut-off calculator →

Field size ~430 Large. Rarely out of sight of another runner.

DUV results for the 2026 edition (120km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, April

Daytime high 15°C

Night low 4°C

Rainfall Showers likely

Daylight 13 h 09 m of light

Regional 2001-2020 average for April — NASA POWER, grid elevation 732 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2026	120km	430	Taketoshi Ooe · 08:38:53	Miho Nakata · 09:05:05
2025	120km	492	Yusuke Kodama · 08:56:20	Sayumi Yashiro · 11:18:20
2024	120km	18	Kenjirou Sakamoto · 10:05:22	—

The field shrank 13% between 2025 (492) and 2026 (430). 15% of the 2026 field were women.

DUV results for the 2026 edition (120km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Course notes

gear With trail terrain, choose a shoe with moderate cushioning for optimal performance.
nutrition For 100km+ efforts, prioritize real food at aid stations to prevent palate fatigue.

Gear for this race

Chosen for 120 km of trail.

Trail Running Shoes 120 km of trail — cushioning that is still there in the last quarter.
Race Nutrition Past 120 km the palate quits before the legs do — carry more than one flavour.
Hydration Vests Flask capacity for 120 km, without the bounce.
Headlamps A 12 h limit puts you out there after dark.
Accessories Chafe and blisters end more 120 km races than fitness does.

Asics

Trabuco Max 2

★★★★★ 4.7

Asics

Trabuco Max 3

★★★★★ 4.6

Tailwind

Endurance Fuel

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

$25 ★★★★★ 4.8

Salomon

ADV Skin 12

Industry-standard 12L race vest with front flask pockets and minimal bounce.

$180 ★★★★★ 4.8

Petzl

NAO RL

1500-lumen reactive lighting headlamp with 15-hour runtime. Automatic brightness adjustment.

$150 ★★★★★ 4.7

Buff

CoolNet UV+ Multifunctional

UPF 50+ neck gaiter with cooling technology. Desert and sun essential.

$25 ★★★★★ 4.5

All gear guides →

Overview

The Fuji 5 Lakes Sparta Challenge, a 120km road race in Fujiyoshida, Yamanashi Pref., Japan, is scheduled for April 18, 2027. It offers a field bigger than 94% of 100k races.

The race has a 12-hour time limit for its 120km course, which means a tight cutoff pace of 6 minutes per kilometer. This cutoff is tighter than 97% of 100k races. The course is designed to meet Spartathlon qualification standards, covering 118.4km with an additional 1.6km to reach 120km.

Similar races

Other 100K trail ultras, closest in distance first.