Shinji (石川慎士) Ishikawa
Born : 1967 Cat. M55 Ultrarunner since 2008 JPN
33
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
36
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
37,4%
Rank quotient ?This runner's calculation uses 33 eligible race(s): Σ(rank − 1) = 5 992; Σ finishers = 16 039. 5 992 / 16 039 × 100 = 37.36%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed33
Km — ultra races1 943 km
Longest race100,0 km

Km per year (ultra races)

50
1 race
2022
50
1 race
2023
100
2 races
2024
2025
50
1 race
2026

Race types (share of distance)

Road81,7%
Trail18,3%

HISTORY

33 race(s)
DateRacePerf.Rk
2026
21.06 50km JPN19. Okinoshima 50km Ultra Marathon 6:55:11 h204
2024
22.09 50km JPN32. Akita Nairiku 50km Marathon 5:48:04 h88
30.06 50km JPN39. Lake Saroma 50 km Ultramarathon 5:57:03 h95
2023
18.06 50km JPN16. Okinoshima 50km Ultra Marathon 7:26:22 h215
2022
19.06 50km JPN15. Okinoshima 50km Ultra Marathon 7:09:50 h128
2019
16.06 50km JPN14. Okinoshima 50km Ultra Marathon 6:14:09 h141
12.05 50km JPN23th 50 km Ultramarathon Ako Seaside Park 5:46:42 h38
2018
17.06 50km JPN13. Okinoshima 50km Ultra Marathon 6:56:41 h209
2017
18.06 50km JPN12. Okinoshima 50km Ultra Marathon 5:53:17 h93
27.05 52km JPN6th Tojinbo 52 km Ultramarathon 5:45:33 h14
15.01 50km JPN27th Miyako 50 km Ultramarathon 5:24:49 h34
2016
19.06 50km JPN11. Okinoshima 50km Ultra Marathon 6:00:45 h105
22.05 71km JPN22nd Yatsugatake Nobeyama 71 km 10:05:04 h124
2015
13.09 50km JPN3rd 50 km Ultramarathon Hakusan-Shirakawago 5:52:43 h187
28.06 100km JPN30. Lake Saroma 100 km Ultramarathon 11:11:49 h965
21.06 50km JPN10. Okinoshima 50km Ultra Marathon 4:59:22 h51
07.06 72km JPN4th Hida Takayama 72 km Ultramarathon 7:48:48 h80
17.05 71km JPN21st Yatsugatake Nobeyama 71 km 8:23:58 h36
2014
15.06 50km JPN9. Okinoshima 50km Ultra Marathon 6:19:09 h156
2013
20.10 60km JPN2nd Noto Peninsula 60 km Ultra Marathon 7:23:46 h72
29.09 50km JPN1st 50 km Ultramarathon Hakusan-Shirakawago 6:11:28 h158
30.06 100km road race JPN28. Lake Saroma 100 km Ultramarathon 12:37:58 h1653
16.06 50km JPN8. Okinoshima 50km Ultra Marathon 5:57:39 h63
19.05 71km JPN19th Yatsugatake Nobeyama 71 km 9:34:01 h127
21.04 72km JPN23rd Fuji 5 Lakes 72 km Challenge 9:29:52 h293
2012
17.06 50km JPN7. Okinoshima 50km Ultra Marathon 6:22:45 h138
2011
16.10 60km JPN17th River Shimanto 60km 7:09:21 h114
19.06 50km JPN6. Okinoshima 50km Ultra Marathon 6:04:32 h64
2010
20.06 50km JPN5. Okinoshima 50km Ultra Marathon 5:38:57 h40
16.05 71km JPN16th Yatsugatake Nobeyama 71 km 9:10:18 h89
25.04 72km JPN20th Fuji 5 Lakes 72 km Challenge 8:51:53 h162
2008
08.06 50km JPN4th Iwate Ginga 50km Marathon Challenge 5:20:24 h30
18.05 71km JPN14th Yatsugatake Nobeyama 71 km 9:00:05 h59