Yoshimitsu (新井吉光) Arai
ID 89191
Born : 1968 Cat. M55 Ultrarunner since 2009 JPN
47
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
65
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
31,9%
Rank quotient ?This runner's calculation uses 47 eligible race(s): Σ(rank − 1) = 12 947; Σ finishers = 40 603. 12 947 / 40 603 × 100 = 31.89%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed47
Km — ultra races5 717 km
> 100 km20
> 160 km8
> 200 km4
> 24h11
Longest race520,0 km
11th River Road Foot Race 520 km — 30/4/2015

Km per year (ultra races)

2022
171
2 races
2023
200
2 races
2024
204
2 races
2025
224
2 races
2026

Race types (share of distance)

Road100,0%

Records

50 km5h16'59100 km9h46'4150 mi10h55'0524 h184,57 km

HISTORY

47 race(s) · 3 split(s) nested
DateRacePerf.Rk
2026
28.06 100km JPN41. Lake Saroma 100 km Ultramarathon 12:30:15 h1881
23.05 24h JPNIAU 24h Asia and Oceania Championships Open 123.750 km89
2025
24.05 24h JPN4th Hirosaki 24h Ultra Run 123.787 km69
20.04 80km JPN35th Fuji 4 Lakes 80 km Challenge 10:55:05 h148
2024
30.06 100km JPN39. Lake Saroma 100 km Ultramarathon 11:28:20 h717
20.05 100km JPN3rd Hirosaki 100 km Ultra Run 11:29:11 h22
2023
25.06 100km JPN38. Lake Saroma 100 km Ultramarathon 11:50:56 h936
08.04 71km JPN18th Toda Saiko 70 km 7:26:59 h85
2019
30.06 100km JPN34. Lake Saroma 100 km Ultramarathon 10:39:13 h605
2018
24.06 100km JPN33. Lake Saroma 100 km Ultramarathon 10:08:00 h490
2017
11.11 24h JPN12th Jingu Gaien 24 Hour Challenge 68.877 km141
25.06 100km JPN32. Lake Saroma 100 km Ultramarathon 11:28:42 h917
2016
17.12 24h JPN11th Jingu Gaien 24 Hour Challenge 169.617 km64
26.06 100km JPN31. Lake Saroma 100 km Ultramarathon 10:51:09 h822
2015
19.12 24h JPN10th Jingu Gaien 24 Hour Challenge 100.666 km113
12.07 8h JPN21st 8-Hour Endurance Race Tokorozawa 62.567 km52
28.06 100km JPN30. Lake Saroma 100 km Ultramarathon 10:20:29 h612
22.06 77km JPN22. Ultramarathon Okumusashi 8:55:45 h497
30.04 520km JPN11th River Road Foot Race 520 km 5d 11:32:16 h59
11.04 70km JPN10th Toda Saiko 70 km 7:16:09 h150
28.02 203km JPN5th Little Edo Oedo 200k 34:54:23 h178
2014
08.11 24h JPN9th Jingu Gaien 24 Hour Challenge 179.179 km34
14.09 142km JPN17th Karisakatoge beyond Chichibu Run 23:49:53 h172
30.08 103km JPN2nd World Cultural Heritage "Fuji" Foot Race 13:54:00 h27
27.07 77km JPN21. Ultramarathon Okumusashi 9:18:01 h282
29.06 100km JPN29. Lake Saroma 100 km Ultramarathon 10:51:35 h430
12.04 70km JPN9th Toda Saiko 70 km 6:52:31 h79
01.03 203km JPN4th Little Edo Oedo 200k 35:50:46 h145
2013
09.11 24h JPN8th Jingu Gaien 24 Hour Challenge 184.567 km36
29.09 100km JPN1st 100 km Ultramarathon Hakusan-Shirakawago 11:32:47 h114
14.09 24h JPN16. Hiratsuka 24 hour race 108.990 km13
28.07 77km JPN20. Ultramarathon Okumusashi 8:43:54 h349
30.06 100km road race JPN28. Lake Saroma 100 km Ultramarathon 9:56:54 h337
03.05 255km JPN9th River Road Foot Race 255 km 2d 05:43:13 h21
21.04 112km JPN23rd Fuji 5 Lakes 112 km Challenge 13:52:28 h150
2012
07.10 24h JPN7th Jingu Gaien 24 Hour Challenge 167.751 km42
05.08 77km JPN19. Ultramarathon Okumusashi 9:40:54 h466
24.06 100km road race JPN27. Lake Saroma 100 km Ultramarathon 9:46:41 h306
03.05 140km JPN24. Yamaguchi 100 Hagi-O-Kan Maranic 140 km 20:15:39 h40
22.04 112km JPN22nd Fuji 5 Lakes 112 km Challenge 11:47:04 h90
2011
15.10 24h JPN6th Jingu Gaien 24 Hour Challenge 141.882 km45
07.08 77km JPN18. Ultramarathon Okumusashi 8:19:53 h206
26.06 100km road race JPN26. Lake Saroma 100 km Ultramarathon 10:13:42 h378
30.04 112km JPN21st Fuji 5 Lakes 112 km Challenge 12:42:48 h136
2010
11.09 24h JPN5th Jingu Gaien 24 Hour Challenge 157.834 km21
27.06 100km JPN25. Lake Saroma 100 km Ultramarathon 10:49:34 h413
2009
12.09 50km JPN4th Jingu Gaien Ultramarathon 50 km 5:16:59 h15