Kyotango, Kyoto Pref., Japan · Sunday, September 20, 2026

Fixed Distance 100K

Tango 100 km Ultramarathon

17 days to go
100 km Distance
not publishedn/a Climbing
5.0 est Grit · Challenging

Calculated from 100 km alone — the organiser has not published an elevation profile. Read 5.0 as a floor, not a verdict.

Register with organiserRegister ↗ Add to calendar
35.6242° N, 135.0611° E © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Time limit 14 hours 8:24 min/km average. Comfortable. Room to walk the climbs and stop at aid. Climbing is unpublished, so this pace is a ceiling on the effort, not a measure of it. Tighter than 85% of 100K races. Measured against 203 races of the same distance. Cut-off calculator →
Field size ~1,108 Very large. Congested start, busy aid stations.

DUV results for the 2025 edition (100km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, September

Daytime high 25°C
Night low 19°C
Rainfall Wet — expect rain
Daylight 12 h 16 m of light

Regional 2001-2020 average for September — NASA POWER, grid elevation 218 m. Not a forecast.

The Aid Station

Course-specific beta from the community

👟 gear

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

By UltraHub Expert
🥤 nutrition

For 100km+ efforts, prioritize real food at aid stations to prevent palate fatigue.

By UltraHub Expert

Gear for this race

Chosen for 100 km of trail.

  • Trail Running Shoes 100 km of trail — cushioning that is still there in the last quarter.
  • Race Nutrition Past 100 km the palate quits before the legs do — carry more than one flavour.
  • Hydration Vests Flask capacity for 100 km, without the bounce.
  • Headlamps A 14 h limit puts you out there after dark.
  • Accessories Chafe and blisters end more 100 km races than fitness does.

Asics

Trabuco Max 3

★★★★★ 4.6

Salomon

Aero Glide 4 Grvl

$159.95 ★★★★★ 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

Nitecore

UT32

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

$100 ★★★★★ 4.5

Squirrel's Nut Butter

Anti-Chafe Balm

All-natural anti-chafe balm. Essential for 100+ mile races.

$12 ★★★★★ 4.8
All gear guides →

Course Notes

It is a course where you can enjoy the ups and downs of the Tango Peninsula, mostly along the coastline of the Sea of ​​Japan.

Similar races

Other 100K trail ultras, closest in distance first.