Matsuzaki, Shizuoka Pref., Japan · Saturday, December 12, 2026

Fixed Distance 50 mi

Izu Trail Journey

100 days away
70 km Distance
3,120 m Climbing
8.2 Grit · Hardcore
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34.7528° N, 138.7787° E © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 45 m / km Mountain. Significant climbing. Steep sections will require power hiking.
Time limit 14 hours 12:00 min/km average. Generous. Walkable throughout for most of the field. About average for a 50 mi. Measured against 445 races of the same distance. Cut-off calculator →
Field size ~899 Very large. Congested start, busy aid stations.

DUV results for the 2025 edition (70km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, December

Daytime high 11°C
Night low 6°C
Rainfall Mostly dry
Daylight 9 h 52 m of light

Regional 2001-2020 average for December — NASA POWER, grid elevation 231 m. Not a forecast.

The Aid Station

Course-specific beta from the community

⛰️ terrain

This is a mountain course. Poles are highly recommended for the sustained climbs.

By UltraHub Expert
👟 gear

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

By UltraHub Expert

Gear for this race

Chosen for 70 km of trail with 3,120 m of ascent.

Adidas

Terrex Speed Ultra

★★★★★ 4.5

Brooks

Catamount 3

★★★★★ 4.5

Skratch Labs

Sport Hydration Mix

Clean electrolyte drink mix with real fruit flavor. Low sugar.

$20 ★★★★★ 4.5

Salomon

ADV Skin 12

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

$180 ★★★★★ 4.8

Black Diamond

Distance FLZ

Lightweight folding trekking poles with FlickLock Z adjustment. 340g per pole.

$170 ★★★★★ 4.7

Nitecore

UT32

Dual-beam trail running headlamp (1100 lumens) with spot and flood beams.

$100 ★★★★★ 4.5
All gear guides →

Course Notes

Izu Peninsula (Izu Hanto) is located approx. 100km southwest of Tokyo. It's a very famous resort area known for it's beautiful coastal scenery and abundant hot springs. The Izu Trail is a one-way course starting from Matsuzaki to Shuzenji.

Similar races

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