Yuzo (小池祐三) Koike
Born : 1963 Cat. M60 Ultrarunner since 2004 JPN
29
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
55
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
75,0%
Rank quotient ?This runner's calculation uses 29 eligible race(s): Σ(rank − 1) = 3 249; Σ finishers = 4 332. 3 249 / 4 332 × 100 = 75.00%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed29
Km — ultra races4 169 km
> 100 km15
> 160 km9
> 200 km4
Longest race276,0 km

Km per year (ultra races)

449
2 races
2022
200
2 races
2023
576
4 races
2024
476
3 races
2025
2026

Race types (share of distance)

Road100,0%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 30
🏅 Top 3 M1
Longest winning streak0
Current streak0

HISTORY

29 race(s)
DateRacePerf.Rk
2025
14.12 100km JPN6th Tobishima Ultra Marathon 15:39:41 h341
22.11 276km JPN19th Nagasaki Tachibana Gulf Coast Super Maranic 276 2d 10:10:34 h22
26.10 100km JPN7th Yasaka Ultra Marathon in Hamada - 100 km 14:57:55 h79
2024
08.12 100km JPN5th Tobishima Ultra Marathon 15:20:13 h322
23.11 276km JPN18th Nagasaki Tachibana Gulf Coast Super Maranic 276 2d 09:45:03 h19
20.10 100km JPN6th Yasaka Ultra Marathon in Hamada - 100 km 15:41:56 h123
21.04 100km JPN3rd Suo-Oshima Ultra Marathon - 100 km 15:39:38 h262
2023
10.12 100km JPN4th Tobishima Ultra Marathon 15:44:37 h353
15.10 100km JPN5th Yasaka Ultra Marathon in Hamada - 100 km 15:57:01 h89
2022
20.11 276km JPN16th Nagasaki Tachibana Gulf Coast Super Maranic 276 2d 09:44:14 h21
03.05 173km JPN16th Nagasaki Tachibana Gulf Coast Super Maranic 173 30:43:17 h53
2021
26.11 103km JPN1st Tachibana Bay 273 Autumn Shimabara 16:28:03 h73
2019
08.12 100km JPN2nd Tobishima Ultra Marathon 14:44:55 h250
2018
09.12 100km JPN1st Tobishima Ultra Marathon 14:39:48 h147
02.11 105km JPNTachibana Bay Coast 105 Ultra Marathon 16:33:12 h185
2017
01.10 100km JPN1st Yasaka Ultra Marathon in Hamada - 100 km 14:59:51 h92
2011
05.11 160km JPN8th Kansai Yumeikido Road Super Run 160 km 29:06:00 h5
02.05 250km JPN23. Yamaguchi 100 Hagi-O-Kan Maranic 250 km 47:34:27 h197
08.04 200km JPN11th Taiyou No Michi 200km (Uchimiya course) 40:17:00 h6
2010
16.04 190km JPN10th Taiyou No Michi 190km 37:54:00 h4
2009
03.05 140km JPN21. Yamaguchi 100 Hagi-O-Kan Maranic 140 km 21:41:47 h139
10.04 190km JPN9th Taiyou No Michi 190km 37:50:00 h10
2008
03.05 140km JPN20. Yamaguchi 100 Hagi-O-Kan Maranic 140 km 23:12:31 h140
11.04 190km JPN8th Taiyou No Michi 190km 37:45:00 h7
2007
07.10 100km JPN7th Ancient Ways Nara - Kyoto 100 km Excursion 15:26:00 h23
03.05 140km JPN19. Yamaguchi 100 Hagi-O-Kan Maranic 140 km 21:39:39 h89
2005
29.10 100km JPN5th Ancient Ways Nara - Kyoto 100 km Excursion 14:45:27 h22
2004
17.10 60km JPN10th River Shimanto 60km 8:39:18 h174
29.05 100km JPN4th Ancient Ways Nara - Kyoto 100 km Excursion 15:51:14 h31