Manabu (溝渕学) Mizobuchi
Born : 1960 Cat. M65 Ultrarunner since 2004 JPN
34
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
2
Countries visited ?JPNJapanNEDNetherlands
11,5%
Rank quotient ?This runner's calculation uses 34 eligible race(s): Σ(rank − 1) = 3 235; Σ finishers = 28 099. 3 235 / 28 099 × 100 = 11.51%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed34
Km — ultra races3 066 km
> 100 km2
> 160 km1
> 24h2
Longest race165,5 km

Km per year (ultra races)

2022
70
1 race
2023
70
1 race
2024
70
1 race
2025
70
1 race
2026

Race types (share of distance)

Road70,6%
Trail29,4%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 32
🏅 Top 3 M2
Longest winning streak0
Current streak0

HISTORY

34 race(s) · 1 split(s) nested
DateRacePerf.Rk
2026
03.05 70km JPN34. Mukogawa Yurikamome Ultra Marathon 6:19:01 h51
2025
03.05 70km JPN33. Mukogawa Yurikamome Ultra Marathon 5:58:27 h39
2024
03.05 70km JPN32. Mukogawa Yurikamome Ultra Marathon 8:03:37 h211
2023
03.05 70km JPN31. Mukogawa Yurikamome Ultra Marathon 7:56:00 h187
2018
24.06 100km JPN33. Lake Saroma 100 km Ultramarathon 11:13:47 h917
03.06 50km JPN1st Nanto 50 km Ultramarathon 4:15:13 h4
2015
28.06 100km JPN30. Lake Saroma 100 km Ultramarathon 8:37:55 h114
29.03 70km JPN1st Osaka Yodogawa 70 km Ultra Marathon 5:34:58 h7
2013
30.06 100km road race JPN28. Lake Saroma 100 km Ultramarathon 9:17:55 h158
19.05 71km JPN19th Yatsugatake Nobeyama 71 km 6:42:32 h10
03.05 70km JPN21. Mukogawa Yurikamome Ultra Marathon 5:23:17 h14
21.04 72km JPN23rd Fuji 5 Lakes 72 km Challenge 6:22:10 h16
2012
07.10 24h JPN7th Jingu Gaien 24 Hour Challenge 131.478 km60
21.09 100km JPN12th Tango 100 km Ultramarathon 9:35:25 h28
24.06 100km road race JPN27. Lake Saroma 100 km Ultramarathon 10:01:59 h378
20.05 71km JPN18th Yatsugatake Nobeyama 71 km 7:32:17 h23
2011
15.10 24h JPN6th Jingu Gaien 24 Hour Challenge 165.503 km32
03.05 70km JPN19. Mukogawa Yurikamome Ultra Marathon 5:15:21 h12
2010
19.09 100km JPN10th Tango 100 km Ultramarathon 8:25:06 h8
27.06 100km JPN25. Lake Saroma 100 km Ultramarathon 8:32:29 h44
16.05 100km JPN16th Yatsugatake Nobeyama 100 km 10:25:12 h94
03.05 70km JPN18. Mukogawa Yurikamome Ultra Marathon 4:56:39 h2 🥈
2009
20.09 100km JPN9th Tango 100 km Ultramarathon 8:06:24 h4
14.06 100km JPN5th Iwate Ginga 100km Marathon Challenge 8:08:00 h7
17.05 100km JPN15th Yatsugatake Nobeyama 100 km 13:13:09 h432
03.05 70km JPN17. Mukogawa Yurikamome Ultra Marathon 5:07:40 h6
2008
03.08 75km JPN15. Ultramarathon Okumusashi 5:53:12 h8
2007
24.06 100km JPN22. Lake Saroma 100 km Ultramarathon 8:24:11 h46
2006
17.09 100km JPN6th Tango 100 km Ultramarathon 9:26:59 h31
25.06 100km JPN21. Lake Saroma 100 km Ultramarathon 10:03:01 h272
2005
16.10 100km JPN11th River Shimanto 100km 7:19:17 h2 🥈
26.06 100km JPNOpen Race at IAU 100km WC Yubetsu (20. Lake Saroma 100 km Ultramarathon) 8:00:44 h20
2004
11.09 100km NED29. IAU 100km WC Winschoten 7:18:12 h24
27.06 100km JPN19. Lake Saroma 100 km Ultramarathon 7:27:05 h8