Kenshi (酒井健嗣) Sakai
ID 221287
Born : 1985 Cat. M40 Ultrarunner since 2011 JPN
40
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
62
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
1
Countries visited ?JPNJapan
21,6%
Rank quotient ?This runner's calculation uses 40 eligible race(s): Σ(rank − 1) = 5 061; Σ finishers = 23 456. 5 061 / 23 456 × 100 = 21.58%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed40
Km — ultra races5 043 km
> 100 km19
> 160 km13
> 200 km4
Longest race520,0 km
11th River Road Foot Race 520 km — 30/4/2015

Km per year (ultra races)

167
1 race
2022
2023
60
1 race
2024
2025
2026

Race types (share of distance)

Road48,5%
Trail51,5%

Records

50 km9h49'11100 km9h38'35100 mi21h21'176 h61,79 km

HISTORY

40 race(s)
DateRacePerf.Rk
2024
08.06 60km JPN11th Fairy Trail - Super Long 11:31:19 h98
2022
22.04 167km JPN7th Ultra-Trail Mt. Fuji 36:44:34 h708
2019
13.07 100mi JPN12th OSJ Ontake 100 Mile Ultra Trail 23:49:43 h54
2018
16.12 68km JPNCoast to Coast 70k Trail Run 8:57:24 h97
22.09 129km JPN5th SkyView Ultra-Trail 120 - Yamada Noboru Memorial Cup 27:15:56 h120
03.06 78km JPN25. Ultramarathon Okumusashi 9:12:00 h403
27.04 170km JPN5th Ultra-Trail Mt. Fuji 38:26:07 h329
2017
17.12 68km JPNCoast to Coast 70k Trail Run 8:29:11 h51
21.05 77km JPN22th Saba Highway Ultramarathon 10:24:46 h184
2016
16.12 70km JPNCoast to Coast 70k Trail Run 8:50:27 h103
16.07 100mi JPN9th OSJ Ontake 100 Mile Ultra Trail 23:08:19 h49
05.03 204km JPN6th Little Edo Oedo 200k 28:18:58 h24
2015
31.10 71.5km JPN23rd Hasetsune Cup - Japan Mountain Endurance Race 12:45:27 h483
20.09 153km JPN18th Karisakatoge beyond Chichibu Run 23:00:00 h56
02.08 74km JPN1st OSJ Yamanaka Onsen Trail Run 12:44:49 h19
18.07 100mi JPN8th OSJ Ontake 100 Mile Ultra Trail 21:22:04 h16
17.05 100km JPN21st Yatsugatake Nobeyama 100 km 11:47:52 h333
30.04 520km JPN11th River Road Foot Race 520 km 4d 17:12:06 h15
28.02 203km JPN5th Little Edo Oedo 200k 25:51:30 h17
2014
12.10 100km JPN10th Echigo Kubikino 100km Ultramarathon 9:38:35 h91
19.07 100mi JPN7th OSJ Ontake 100 Mile Ultra Trail 21:21:17 h22
18.05 100km JPN20th Yatsugatake Nobeyama 100 km 11:44:27 h277
25.04 100mi JPN3rd Ultra-Trail Mt. Fuji 32:46:32 h134
01.03 91km JPN4th Little Edo 91km 9:27:38 h4
2013
15.09 142km JPN16th Karisakatoge beyond Chichibu Run 20:22:07 h37
13.07 100mi JPN6th OSJ Ontake 100 Mile Ultra Trail 21:33:50 h15
02.06 50km JPN5th OSJ Okukuji Trail 50k 9:49:11 h38
21.04 112km JPN23rd Fuji 5 Lakes 112 km Challenge 12:53:52 h68
10.03 72km JPN1st Izu Trail Journey 9:16:05 h112
02.03 203km JPN3rd Little Edo Oedo 200k 32:20:31 h65
2012
03.11 100mi JPN1st OSJ Yatsugatake Super Trail 100 miles race 25:14:14 h27
07.10 71.5km JPN20th Hasetsune Cup - Japan Mountain Endurance Race 11:09:22 h174
15.09 100km JPN1st Tojinbo 100 km Ultramarathon 12:14:26 h13
05.08 77km JPN19. Ultramarathon Okumusashi 8:45:37 h261
15.07 100km JPN5th OSJ Ontake 100km Ultra Trail 11:59:40 h97
10.06 100km JPN1st Hida Takayama 100 km Ultramarathon 11:33:26 h148
20.05 100km JPN18th Yatsugatake Nobeyama 100 km 11:31:16 h199
22.04 112km JPN22nd Fuji 5 Lakes 112 km Challenge 11:16:51 h60
2011
11.06 6h JPN10. Tokyo Challenge 6 hours 61.792 km30
30.04 112km JPN21st Fuji 5 Lakes 112 km Challenge 11:37:01 h70