Ultra Running Hub Kyotango, Kyoto Pref., Japan · Sunday, September 20, 2026
Tango 100 km Ultramarathon
Calculated from 100 km alone — the organiser has not published an elevation profile. Read 5.0 as a floor, not a verdict.
What the course asks
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
Regional 2001-2020 average for September — NASA POWER, grid elevation 218 m. Not a forecast.
Results history
| Year | Race | Finishers | Men's winner | Women's winner |
|---|---|---|---|---|
| 2025 | 100km | 1,108 | Kazunari Tomitaka · 07:32:21 | Akiko Maruichi · 08:06:35 |
| 2024 | 100km | 797 | Ryoya Takabayashi · 06:59:25 | Akiko Maruichi · 08:11:37 |
| 2023 | 100km | 724 | Kazunari Tomitaka · 07:09:07 | Akiko Maruichi · 08:24:31 |
| 2022 | 100km | 618 | Kazunari Tomitaka · 07:27:01 | Yuika Adachi · 08:52:09 |
| 2019 | 100km | 1,086 | Yoshihiko Ishikawa · 07:27:20 | Narumi Mukai · 09:05:58 |
| 2018 | 100km | 1,159 | Kazunari Tomitaka · 07:24:25 | Narumi Mukai · 08:43:57 |
| 2016 | 100km | 1,321 | Yoshihiko Ishikawa · 07:08:01 | Hiromi Ideno · 08:31:23 |
| 2015 | 100km | 1,613 | Yoshihiko Ishikawa · 07:06:53 | Haruka Shiina · 09:19:49 |
| 2014 | 100km | 1,428 | Hikaru Ideguchi · 07:17:06 | Haruka Shiina · 09:16:33 |
| 2013 | 100km | 1,353 | Yasukazu Miyasato · 07:35:06 | Mikie Sakane · 08:36:45 |
The field grew 39% between 2024 (797) and 2025 (1,108). 13% of the 2025 field were women.
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.
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 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.
Overview
The Tango 100 km Ultramarathon was a fixed road race in Kyotango, Kyoto Pref., tracing an undulating route along the Sea of Japan coastline on the Tango Peninsula. Drawing 1108 finishers in 2025, the event featured a field bigger than 98% of 100k races—and smaller than just 2%—putting participants amid one of the deepest packs at this distance.
That crowd contended with a strict 14-hour time limit, establishing a cut-off tighter than 81% of 100k peers and more generous than 19%. Meeting that standard required maintaining a pace under 8.4 minutes per kilometre across the entire 100-kilometre course, leaving little buffer for prolonged slowdowns on the peninsula's coastal climbs.
Similar races
Other 100K trail ultras, closest in distance first.