Kazumi (西原一美) Nishihara
ID 225040
Born : 1956 Cat. M70 Ultrarunner since 2005 JPN
28
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
49
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
65,8%
Rank quotient ?This runner's calculation uses 28 eligible race(s): Σ(rank − 1) = 5 482; Σ finishers = 8 328. 5 482 / 8 328 × 100 = 65.83%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed28
Km — ultra races2 741 km
> 100 km5
Longest race140,0 km
17. Yamaguchi 100 Hagi-O-Kan Maranic 140 km — 3/5/2005

Km per year (ultra races)

184
2 races
2022
100
1 race
2023
184
2 races
2024
2025
2026

Race types (share of distance)

Road92,3%
Trail7,7%

Records

100 km11h38'12

HISTORY

28 race(s)
DateRacePerf.Rk
2024
09.06 84.39km JPN8th JAL Mukatsuku Double Marathon 12:59:43 h337
21.04 100km JPN3rd Suo-Oshima Ultra Marathon - 100 km 14:28:59 h181
2023
23.04 100km JPN2nd Suo-Oshima Ultra Marathon - 100 km 15:07:21 h198
2022
12.06 84.39km JPN6th JAL Mukatsuku Double Marathon 12:41:27 h354
22.05 100km JPN1st Suo-Oshima Ultra Marathon - 100 km 15:34:56 h166
2021
20.03 112km JPN24th Mt. Rocco Cannonball Run - 112 km Power 23:45:00 h94
2019
19.10 112km JPN21th Mt. Rocco Cannonball Run - 112 km Power 23:45:06 h47
2018
14.04 102km JPN4th Okuizumo Ultra Orochi 100km Tooashi 15:01:52 h290
2017
01.10 100km JPN1st Yasaka Ultra Marathon in Hamada - 100 km 15:45:24 h105
15.04 102km JPN3rd Okuizumo Ultra Orochi 100km Tooashi 14:05:20 h192
2016
04.05 70km JPN28. Yamaguchi 100 Hagi-O-Kan Maranic 70 km 10:18:02 h161
2015
31.05 100km JPN22nd Ebisu-Daikoku 100 km Marathon 12:51:25 h253
2014
14.09 88km JPN5th Akiota Yajirushi Marathon 88km 10:41:17 h105
04.05 70km JPN26. Yamaguchi 100 Hagi-O-Kan Maranic 70 km 8:32:04 h66
2012
16.09 88km JPN3rd Akiota Yajirushi Marathon 88km 12:34:02 h292
17.06 100km JPN7. Okinoshima 100km Ultra Marathon 13:57:41 h260
2011
29.05 100km JPN18th Ebisu-Daikoku 100 km Marathon 11:38:12 h124
2010
19.09 88km JPN1st Akiota Yajirushi Marathon 88km 12:44:07 h141
30.05 100km JPN17th Ebisu-Daikoku 100 km Marathon 13:08:41 h168
2009
31.05 100km JPN16th Ebisu-Daikoku 100 km Marathon 12:41:37 h160
2008
28.09 100km JPN11th Muraoka 100 km Ultra Marathon 13:34:44 h148
14.09 100km JPN8th Tango 100 km Ultramarathon 12:27:31 h222
25.05 100km JPN15th Ebisu-Daikoku 100 km Marathon 13:08:11 h125
2007
29.09 100km JPN10th Muraoka 100 km Ultra Marathon 13:48:34 h188
2006
25.06 100km JPN6th Nichinan Orochi 100 km Marathon 12:03:22 h148
2005
16.10 100km JPN11th River Shimanto 100km 13:21:19 h789
25.09 100km JPN8th Muraoka 100 km Ultra Marathon 13:51:35 h132
03.05 140km JPN17. Yamaguchi 100 Hagi-O-Kan Maranic 140 km 21:10:16 h64