Keisuke (一堂啓介) Ichido
Born : 1984 Cat. M40 Ultrarunner since 2015 JPN
42
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
59
DUV-index+ ?Largest integer N such that the race distances provide at least N complete segments of N km in total. A single long race may therefore contribute several segments. See the DUV-Index tab for the detailed calculation. calculation details
6
Countries visited ?CROCroatiaFRAFranceJPNJapanTHAThailandTPETaiwanTURTürkiye
35,4%
Rank quotient ?This runner's calculation uses 42 eligible race(s): Σ(rank − 1) = 6 710; Σ finishers = 18 965. 6 710 / 18 965 × 100 = 35.38%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed42
Km — ultra races5 149 km
> 100 km28
> 160 km17
> 200 km1
> 24h1
Longest race235,0 km

Km per year (ultra races)

984
7 races
2022
391
3 races
2023
2024
377
3 races
2025
402
3 races
2026

Race types (share of distance)

Road12,6%
Trail87,4%

HISTORY

42 race(s)
DateRacePerf.Rk
2026
28.08 174km FRA23ème Ultra Trail Tour du Mont Blanc 38:14:42 h847
16.05 100mi JPN11th Trainic World 100 Mile in Sai-No-Kuni 34:03:43 h57
28.03 24h JPN17th Jingu Gaien 24 Hour Challenge 67.553 km81
2025
06.12 48km THA2nd Chiangmai Thailand by UTMB - HMONG 50-DAY 7:19:48 h169
15.11 100mi JPN11th FunTrails100M Round 30:18:04 h12
11.04 168km CRO13th Istria 100 by UTMB - 168km 39:20:56 h222
2023
04.11 112km JPN3rd OSJ Kami 100 19:58:00 h42
01.09 170km FRA20ème Ultra Trail Tour du Mont Blanc 44:51:46 h1455
16.07 109.2km JPN15th OSJ Ontake 100km Ultra Trail 13:33:20 h66
2022
09.12 171km THA3rd Thailand by UTMB - 100mi 35:46:43 h78
06.11 101.9km JPN6th Koshu Alps Klesa 108 17:38:21 h29
07.10 169km JPN2nd Lake Biwa 100 42:58:21 h69
04.09 53.4km JPN15th OSJ Adatara Trail 50K 8:10:45 h23
16.07 100mi JPN14th OSJ Ontake 100 Mile Ultra Trail 23:57:09 h60
21.05 100mi JPN7th Trainic World 100 Mile in Sai-No-Kuni 34:32:39 h87
22.04 167km JPN7th Ultra-Trail Mt. Fuji 29:38:20 h251
2021
26.11 100mi JPN1st TAMBA 100 Adventure Trail - 100mi 2d 17:38:55 h22
12.11 180km JPN2nd Osaka Natsunojin Kurondo Rondo - 180 km 41:26:35 h7
09.10 168.5km JPN7th OSJ Koumi 100 31:25:24 h95
2020
29.12 130km JPN1st Kyoto Great Round 24:55:01 h23
24.10 146km JPN2nd Autumn leaves in Okumusashi / Chichibu Journey run 21:20:47 h71
22.02 235km JPN10th Little Edo Oedo 235k 34:50:43 h44
2019
30.11 104km TPE4th Formosa Trail 100km 17:26:00 h12
19.10 119km TUR6th Cappadocia 119 km Ultra-Trail 16:57:52 h50
14.09 100mi JPN11th Shinetsu Five Mountains Trail 100 mile 26:08:42 h49
17.08 101km JPN7th World Cultural Heritage "Fuji" Foot Race 12:38:30 h25
13.07 100km JPN12th OSJ Ontake 100km Ultra Trail 12:57:24 h88
23.06 72.6km JPN6. Spatrail - Shima to Kusatsu 72K 9:30:29 h54
11.05 100mi JPN4th Trainic World 100 Mile in Sai-No-Kuni 32:23:49 h15
24.03 100km JPN1st Ibaraki 100k Ultra Marathon 12:48:46 h347
2018
09.12 71.7km JPN5th Izu Trail Journey 9:47:01 h170
17.11 106km JPN4th FunTrails100K Round 20:34:58 h51
18.10 165.7km FRA26ème Grand Raid Réunion - La Diagonale des Fous 47:02:21 h711
22.09 129km JPN5th SkyView Ultra-Trail 120 - Yamada Noboru Memorial Cup 28:36:13 h162
23.06 80km JPN4th OSJ Yamanaka Onsen Trail Run 15:00:52 h87
22.04 70km JPN4th Okumikawa Power Trail 12:13:39 h158
2017
15.07 100km JPN10th OSJ Ontake 100km Ultra Trail 16:17:39 h537
2016
03.09 110km JPN1st Trainic World 100 km in Sai-No-Kuni 26:45:22 h30
12.06 50km JPN3rd Trainic world Hanno-Ogose Trail Run 50km 9:21:46 h62
29.04 49km JPN9th Ishioka Trail Run 6:20:55 h80
2015
12.07 50.5km JPN2nd Trainic world Hanno-Ogose Trail Run 50km 10:26:26 h55
17.05 73km JPN1st Gasando Trail running race 11:58:34 h199