Osamu (吉越修) Yoshikoshi
ID 37450
Born : 1949 Cat. M75 Ultrarunner since 1992 JPN
54
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
86
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
2
Countries visited ?GREGreeceJPNJapan
15,5%
Rank quotient ?This runner's calculation uses 55 eligible race(s): Σ(rank − 1) = 3 865; Σ finishers = 24 996. 3 865 / 24 996 × 100 = 15.46%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed55
Km — ultra races10 506 km
> 100 km35
> 160 km35
> 200 km34
> 24h1
Longest race250,0 km
26. Sakura Michi Kokusai Nature Run — 20/4/2019

Km per year (ultra races)

2022
260
2 races
2023
2024
2025
2026

Race types (share of distance)

Road19,6%
Trail80,4%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 31
🏅 Top 3 M1
Longest winning streak0
Current streak0

Records

100 km8h03'4624 h160,29 km

HISTORY

55 race(s) · 2 split(s) nested
DateRacePerf.Rk
2023
25.06 100km JPN38. Lake Saroma 100 km Ultramarathon 9:55:33 h303
11.03 24h JPN15th Jingu Gaien 24 Hour Challenge 160.294 km60
2020
19.01 100km JPN30th Miyako 100 km Ultramarathon 13:46:11 h355
2019
20.10 100km JPN25th River Shimanto 100km 10:27:39 h163
30.06 100km JPN34. Lake Saroma 100 km Ultramarathon 9:26:36 h215
20.04 250km JPN26. Sakura Michi Kokusai Nature Run 33:56:00 h67
2018
24.06 100km JPN33. Lake Saroma 100 km Ultramarathon 9:21:44 h235
03.06 53.7km JPN18th Rishiri Island Ultra Marathon 4:30:39 h12
21.04 250km JPN25. Sakura Michi Kokusai Nature Run 35:36:00 h72
2017
22.04 250km JPN24. Sakura Michi Kokusai Nature Run 33:30:09 h49
15.01 100km JPN27th Miyako 100 km Ultramarathon 9:48:19 h39
2016
26.06 100km JPN31. Lake Saroma 100 km Ultramarathon 9:09:27 h207
2015
27.09 100km JPN25. Akita Nairiku 100km Marathon 9:48:16 h70
28.06 100km JPN30. Lake Saroma 100 km Ultramarathon 9:05:18 h192
18.04 250km JPN22. Sakura Michi Kokusai Nature Run 33:35:07 h50
2014
20.07 72km JPN2nd Mt. Taisetsu Trail Journey 72 km 11:43:55 h9
29.06 100km JPN29. Lake Saroma 100 km Ultramarathon 9:23:57 h130
18.04 250km JPN21. Sakura Michi Kokusai Nature Run 33:44:19 h48
23.03 100km GREAntiparos Ultra 100 km road race 12:24:00 h8
2013
27.09 245.3km GRE31. Spartathlon 35:42:39 h135
14.07 72km JPN1st Mt. Taisetsu Trail Journey 72 km 11:07:16 h6
09.06 100km JPN9th Iwate Ginga 100km Marathon Challenge 9:36:44 h65
19.04 250km JPN20. Sakura Michi Kokusai Nature Run 31:57:00 h19
2012
06.10 100km JPN9th Echigo Kubikino 100km Ultramarathon 9:35:28 h57
21.04 250km JPN19. Sakura Michi Kokusai Nature Run 33:15:00 h39
2011
17.07 100km JPN4th OSJ Ontake 100km Ultra Trail 12:05:21 h33
16.04 250km JPN18. Sakura Michi Kokusai Nature Run 31:48:00 h20
2010
09.10 100km JPN8th Echigo Kubikino 100km Ultramarathon 9:08:51 h37
27.06 100km JPN25. Lake Saroma 100 km Ultramarathon 9:45:24 h189
2008
19.04 250km JPN15. Sakura Michi Kokusai Nature Run 35:36:00 h63
2007
21.04 250km JPN14. Sakura Michi Kokusai Nature Run 35:51:00 h62
2006
22.04 250km JPN13. Sakura Michi Kokusai Nature Run 35:47:00 h58
2005
23.04 250km JPN12. Sakura Michi Kokusai Nature Run 35:47:00 h54
2004
24.04 250km JPN11. Sakura Michi Kokusai Nature Run 35:53:00 h50
2003
19.04 250km JPN10. Sakura Michi Kokusai Nature Run 35:48:00 h55
2002
27.09 245.3km GRE20. Spartathlon 35:41:09 h82
20.04 250km JPN9. Sakura Michi Kokusai Nature Run 35:12:00 h42
2001
28.09 245.3km GRE19. Spartathlon 35:06:27 h54
14.04 250km JPN8. Sakura Michi Kokusai Nature Run 29:55:00 h17
2000
29.09 245.3km GRE18. Spartathlon 35:37:18 h80
15.04 250km JPN7. Sakura Michi Kokusai Nature Run 31:37:00 h11
1999
24.09 245.3km GRE17. Spartathlon 35:55:15 h50
17.04 250km JPN6. Sakura Michi Kokusai Nature Run 29:30:00 h11
1998
25.09 245.3km GRE16. Spartathlon 34:40:19 h44
18.04 250km JPN5. Sakura Michi Kokusai Nature Run 30:17:00 h10
1997
26.09 245.3km GRE15. Spartathlon 35:50:00 h70
19.04 250km JPN4. Sakura Michi Kokusai Nature Run 32:12:00 h15
1996
20.04 250km JPN3. Sakura Michi Kokusai Nature Run 29:12:00 h8
1995
29.09 245.3km GRE13. Spartathlon 33:47:52 h33
22.04 250km JPN2. Sakura Michi Kokusai Nature Run 32:11:00 h6
1994
23.09 245.3km GRE12. Spartathlon 30:54:00 h6
26.06 100km JPN9. Lake Saroma 100 km Ultramarathon 8:03:46 h78
23.04 250km JPN1. Sakura Michi Kokusai Nature Run 28:54:00 h2 🥈
1993
24.09 245.3km GRE11. Spartathlon 34:33:21 h29
1992
25.09 245.3km GRE10. Spartathlon 35:40:31 h46