Minoru (小野塚稔) Onozuka
Born : 1980 Cat. M45 Ultrarunner since 2009 JPN
52
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
78
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
8
Countries visited ?CHNChinaGERGermanyGREGreeceITAItalyJPNJapanPOLPolandTPETaiwanUSAUnited States
9,8%
Rank quotient ?This runner's calculation uses 57 eligible race(s): Σ(rank − 1) = 1 168; Σ finishers = 11 925. 1 168 / 11 925 × 100 = 9.79%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed57
Km — ultra races8 383 km
> 100 km29
> 160 km21
> 200 km14
> 24h20
> 48h6
Longest race623,4 km

Km per year (ultra races)

550
3 races
2022
643
3 races
2023
1 678
5 races
2024
815
5 races
2025
595
4 races
2026

Race types (share of distance)

Road88,3%
Trail6,5%
Elim.5,2%

Wins & podiums (ultra)

🏆 Win7
🏆 Win M8
🏅 Top 319
🏅 Top 3 M22
Longest winning streak2
Current streak0

HISTORY

58 race(s) · 16 split(s) nested
DateRacePerf.Rk
2026
23.05 24h JPNIAU 24h Asia and Oceania Championships Open 218.750 km9
11.04 8h JPN21st Toda Saiko 8 Hours 85.000 km6
27.03 48h ITA6^ Cinisello Balsamo Running Festival - GOMU World Championship 48 Hour 226.707 km97
17.01 5h JPN13th Iikoto Challenge - 5h 64.080 km4
2025
21.06 24h JPN20th Green Charity Marathon Tokyo - Hard Run 24H 199.080 km3 🥉
30.05 24h POL7. ABM Jędraszek UltraPark Weekend 48h - 24h split 205.335 km15
30.05 48h POL7. Mount To Coast Ultrapark Weekend GOMU World Championship 48 Hour 234.669 km85
13.04 60km JPN10th Tamagawa Ultra Marathon - 60 km 5:17:12 h4
12.04 71km JPN20th Toda Saiko 70 km 5:32:15 h10
21.03 250km JPN1st Izuichi Great Race 250km 31:44:25 h1 🏆
2024
28.12 6d USA41th Across the Years, 6 days 623.424 km5
13.10 100km JPN15th Echigo Kubikino 100km Ultramarathon 8:46:55 h9
15.09 128km JPN7th Utsukushima Fukushima Journey Run 128K 14:11:41 h2 🥈
20.05 6d JPN3rd Hirosaki 6days Ultra Run 605.741 km16
13.01 Backyard Ultra TPE2nd Taipei Backyard Ultra 221.298 km (33h)2 🥈
2023
23.11 Backyard Ultra JPN4th Last Samurai Standing Backyard Ultra - Fukushima 214.592 km (32h)11
30.09 246km GRE40. Spartathlon 32:33:53 h100
11.03 24h JPN15th Jingu Gaien 24 Hour Challenge 182.745 km41
2022
30.09 246km GRE39. Spartathlon 28:19:06 h14
21.05 48h JPN1st Hirosaki 48h Ultra Run 103.550 km20
09.01 200km JPN2nd Japan Trophy 200 23:08:00 h14
2021
17.07 24h JPN1st Japan Trophy 24h 207.500 km6
10.01 200km JPN1st Japan Trophy 200 21:24:00 h11
2020
07.02 12h TPE9th Taipei 12hr Ultra Marathon Night Run 85.527 km16
19.01 5h JPN10th Iikoto Challenge - 5h 68.166 km2 🥈
2019
25.05 201km JPN11th Biwako Tourism Ultramannic 200 km 27:36:27 h1 🏆
28.04 100km JPN4th Tamagawa Ultra Marathon - 100 km 8:39:23 h1 🏆
16.02 24h TPE8th Taipei 24hr Ultra Marathon 233.171 km2 🥈
2018
10.11 24h JPN13th Jingu Gaien 24 Hour Challenge 180.493 km54
26.10 50km CHN1st Changan Ford Ultra Challenge 50km 3:48:57 h18
29.09 6h JPN7th Coedo Kawagoe Running Fest 6-hours run 74.800 km1 🏆
18.08 24h JPN9th Lake Miyagase 24-hour Relay Marathon 104.400 km18
14.07 12h JPN24th Fuji Hokuroku Park 12h 123.200 km1 🏆
2017
30.09 100km CHNFuxian Lake Highland Ultramarathon 100K 9:51:12 h19
09.09 12h JPN20. Hiratsuka 12 hour race 89.960 km14
2016
17.12 24h JPN11th Jingu Gaien 24 Hour Challenge 158.947 km82
13.08 100mi GER5. Mauerweglauf 100 Meilen Berlin 16:12:41 h3 🥉
18.06 24h JPN15. Green Charity Marathon Tokyo - Hard Run 24H 197.974 km3 🥉
28.05 50km JPN2nd Mt. Hiei Int. 50 km Trail Run 6:44:08 h34
24.04 100km JPN26th Fuji 5 Lakes 100 km Challenge 8:34:42 h21
2015
19.12 24h JPN10th Jingu Gaien 24 Hour Challenge 87.420 km117
08.11 50km CHN1st Gobi Ultra-Marathon Jiuquan 4:07:12 h13
19.07 66km JPN2nd SkyView Ultra-Trail 60 - Yamada Noboru Memorial Cup 8:27:16 h2 🥈
28.03 58km JPN11th Izu Oshima Ultra 58 km 4:05:05 h1 🏆
2014
15.06 81.4km JPN1. Spatrail - Shima to Kusatsu 8:47:56 h7
19.04 50km USA9h Saipan Marathon 3:39:22 h3 🥉
2013
09.11 24h JPN8th Jingu Gaien 24 Hour Challenge 80.798 km94
30.06 100km road race JPN28. Lake Saroma 100 km Ultramarathon 8:34:28 h66
19.05 100km JPN19th Yatsugatake Nobeyama 100 km 9:10:02 h12
2012
07.10 24h JPN7th Jingu Gaien 24 Hour Challenge 218.804 km11
01.09 6h JPN15. Hiratsuka 6 hour race 77.850 km3 🥉
16.06 24h JPN11. Tokyo Challenge 24 hours 100.840 km92
22.04 112km JPN22nd Fuji 5 Lakes 112 km Challenge 9:54:00 h9
2011
20.08 12h JPN1st Toyota Stadium 12 Hour Race 131.228 km1 🏆
12.06 100km JPN7th Iwate Ginga 100km Marathon Challenge 8:44:46 h25
2010
17.01 50km JPN20th Miyako 50 km Ultramarathon 3:42:27 h2 🥈
2009
26.09 6h JPN12. Hiratsuka 6 hour race 76.120 km3 🥉
13.06 6h JPN8. Tokyo Challenge 6 hours 75.960 km4