Mitsuo (笠島光男) Kasajima
Born : 1961 Cat. M65 Ultrarunner since 2008 JPN
35
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
50
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
20,2%
Rank quotient ?This runner's calculation uses 35 eligible race(s): Σ(rank − 1) = 4 796; Σ finishers = 23 727. 4 796 / 23 727 × 100 = 20.21%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed35
Km — ultra races3 029 km
> 100 km7
> 160 km4
Longest race167,0 km

Km per year (ultra races)

267
2 races
2022
148
2 races
2023
2024
2025
2026

Race types (share of distance)

Road23,5%
Trail76,5%

HISTORY

35 race(s)
DateRacePerf.Rk
2023
27.08 48km JPN10th Tsukuba Renjyo 48 km Road & Trail Run 7:57:14 h188
12.03 100km JPN5th Ibaraki 100k Ultra Marathon 11:49:46 h116
2022
22.04 167km JPN7th Ultra-Trail Mt. Fuji 39:50:56 h1074
13.03 100km JPN4th Ibaraki 100k Ultra Marathon 11:32:38 h126
2021
14.03 100km JPN3rd Ibaraki 100k Ultra Marathon 11:22:30 h75
2019
25.08 70km JPN6th Tsukuba Renjyo 70 km Road & Trail Run 10:43:40 h61
01.06 59km JPN11th OSJ Okukuji Trail 60k 11:47:28 h142
24.03 100km JPN1st Ibaraki 100k Ultra Marathon 11:50:29 h265
2018
17.11 106km JPN4th FunTrails100K Round 24:05:32 h120
02.06 50km JPN10th OSJ Okukuji Trail 50k 12:29:45 h147
2017
17.12 68km JPNCoast to Coast 70k Trail Run 8:03:50 h31
2016
16.12 70km JPNCoast to Coast 70k Trail Run 7:50:22 h31
08.10 100mi JPN3rd OSJ Koumi 100 30:26:04 h16
28.08 70km JPN3rd Tsukuba Renjyo 70 km Road & Trail Run 8:41:21 h50
2015
13.09 50km JPN8th OSJ Adatara Trail 50K 8:19:29 h33
2014
12.10 71.5km JPN22nd Hasetsune Cup - Japan Mountain Endurance Race 11:23:43 h235
31.08 70km JPN1st Tsukuba Renjyo 70 km Road & Trail Run 9:34:56 h44
25.04 100mi JPN3rd Ultra-Trail Mt. Fuji 34:19:54 h161
2013
13.10 71.5km JPN21st Hasetsune Cup - Japan Mountain Endurance Race 10:50:39 h159
02.06 50km JPN5th OSJ Okukuji Trail 50k 9:27:18 h25
26.04 100mi JPN2nd Ultra-Trail Mount Fuji 27:48:13 h57
07.04 100km JPN63. Tsurunuma 100 km 11:13:36 h16
2012
07.10 71.5km JPN20th Hasetsune Cup - Japan Mountain Endurance Race 10:40:50 h133
03.06 50km JPN4th OSJ Okukuji Trail 50k 9:00:36 h34
18.05 156km JPN1st Ultra-Trail Mount Fuji 32:38:12 h101
22.04 112km JPN22nd Fuji 5 Lakes 112 km Challenge 10:13:00 h16
01.04 100km JPN61. Tsurunuma 100 km 9:04:27 h4
2011
09.10 71.5km JPN19th Hasetsune Cup - Japan Mountain Endurance Race 10:45:03 h109
05.06 50km JPN3rd OSJ Okukuji Trail 50k 7:58:12 h28
2010
10.10 71.5km JPN18th Hasetsune Cup - Japan Mountain Endurance Race 12:18:07 h200
16.05 100km JPN16th Yatsugatake Nobeyama 100 km 12:19:17 h365
11.04 50km JPN2nd OSJ Okukuji Trail 50k 10:44:37 h74
2009
11.10 71.5km JPN17th Hasetsune Cup - Japan Mountain Endurance Race 11:38:44 h188
12.04 50km JPN1st OSJ Okukuji Trail 50k 9:47:53 h29
2008
12.10 71.5km JPN16th Hasetsune Cup - Japan Mountain Endurance Race 13:15:22 h378