Yuko (宮崎裕子) Miyazaki
ID 479079
Born : 1972 Cat. W50 Ultrarunner since 2013 JPN
53
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
83
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
76,1%
Rank quotient ?This runner's calculation uses 54 eligible race(s): Σ(rank − 1) = 16 636; Σ finishers = 21 869. 16 636 / 21 869 × 100 = 76.07%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed59
Km — ultra races9 371 km
> 100 km32
> 160 km20
> 200 km16
Longest race582,0 km
Across Honshu R9 Foot Race — 18/4/2023

Km per year (ultra races)

1 597
7 races
2022
833
2 races
2023
921
3 races
2024
363
3 races
2025
270
2 races
2026

Race types (share of distance)

Road91,1%
Trail2,3%
Stage6,6%

Wins & podiums (ultra)

🏆 Win0
🏆 Win F0
🏅 Top 30
🏅 Top 3 F5
Longest winning streak0
Current streak0

Records

100 km12h55'3412 h81,60 km

HISTORY

55 race(s) · 8 stage(s) nested
DateRacePerf.Rk
2026
19.07 207km JPN4th Round of the Boso Peninsula 210K 43:53:26 h29
30.05 63km JPN10th Yokosuka Miura 63km Michikusa Ultra Marathon 10:02:52 h182
2025
19.07 210km JPN3rd Round of the Boso Peninsula 210K 44:57:41 h20
21.06 12h JPN1st Masuda 12 Hours Ultra Truck Race 81.600 km4
12.04 71km JPN20th Toda Saiko 70 km 8:42:58 h196
2024
30.04 514km JPN19th River Road Foot Race 514 km 5d 11:52:28 h86
31.03 71km JPN1st Modern Japanese Silk Road Journey Run - Stage 2 12:22:55 h50
16–17.03 136km/2stages JPN12th Arakawa Riverside Journey Stage Race 20:16:00 h57
09.03 200km JPN14th Little Edo Oedo 200k 35:52:04 h229
2023
16.09 251km JPN6th Utsukushima Fukushima Journey Run 251K 2d 01:54:12 h50
18.04 582km JPNAcross Honshu R9 Foot Race 7d 11:28:50 h17
2022
22.10 535km JPNAcross Honshu R8 Foot Race 6d 07:48:00 h5
17.09 251km JPN5th Utsukushima Fukushima Journey Run 251K 2d 01:52:41 h46
16.07 266km JPN6th Michinoku Tsugaru Journey Run 263K 2d 02:59:35 h84
03.07 8h JPN28th 8-Hour Endurance Race Tokorozawa 53.900 km142
02.04 155km JPN2nd Tone River Run Up Journey Run Downstream 27:17:00 h69
21–22.03 136km/2stages JPN10th Arakawa Riverside Journey Stage Race 20:08:00 h63
12.03 200km JPN12th Little Edo Oedo 200k 35:00:00 h161
2021
06.11 230km JPN8th Setouchi Angya 2021 - 230 km 37:56:00 h23
16.10 120km JPN1st Tone River Run Up Journey Run Upstream 20:55:00 h51
09.10 155km JPN1st Tone River Run Up Journey Run Downstream 26:48:00 h55
17.07 117km JPN1st Nakasendo Ultra 27:03:00 h39
04.07 8h JPN27th 8-Hour Endurance Race Tokorozawa 63.700 km167
30.04 503km JPN16th River Road Foot Race 503 km 5d 11:40:45 h68
23.04 430km JPNAcross Honshu R7 Foot Race 5d 06:27:00 h8
10.04 70km JPN16th Toda Saiko 70 km 8:46:29 h390
03–04.04 136km/2stages JPN9th Arakawa Riverside Journey Stage Race 20:26:00 h38
27.02 200km JPN11th Little Edo Oedo 200k 35:46:58 h195
2020
22.02 206km JPN10th Little Edo Oedo 205k 35:02:07 h195
2019
14.09 251km JPN2nd Utsukushima Fukushima Journey Run 250K 2d 01:47:38 h71
13.07 263km JPN4th Michinoku Tsugaru Journey Run 263K 2d 02:45:15 h119
02.06 78km JPN26. Ultramarathon Okumusashi 11:24:39 h1373
13.04 70km JPN14th Toda Saiko 70 km 7:57:39 h302
16–17.03 136km/2stages JPN7th Arakawa Riverside Journey Stage Race 19:28:01 h52
23.02 113km JPN9th Oedo Night run 113k 15:16:35 h18
2018
15.09 250km JPN1st Utsukushima Fukushima Journey Run 250K 2d 01:57:35 h51
03.06 78km JPN25. Ultramarathon Okumusashi 11:20:48 h1189
03.05 254km JPN14th River Road Foot Race 254 km 2d 08:39:47 h45
14.04 70km JPN13th Toda Saiko 70 km 7:55:22 h329
03.03 113km JPN8th Oedo Night run 113k 15:55:48 h30
2017
02.09 115km JPN1st Miyagi Yumeguri Ultra Marathon - 115 km 14:36:27 h64
04.06 78km JPN24. Ultramarathon Okumusashi 11:50:37 h1429
27.05 100km JPN1st Tsukuba Rinrin Road 100km 17:39:00 h29
08.04 70km JPN12th Toda Saiko 70 km 7:55:10 h364
2016
17.07 200km JPN1st Michinoku Tsugaru Journey Run 200K 37:41:09 h93
05.06 78km JPN23. Ultramarathon Okumusashi 10:08:20 h915
24.04 100km JPN26th Fuji 5 Lakes 100 km Challenge 13:30:36 h976
2015
20.09 100km JPN15th Tango 100 km Ultramarathon 13:28:45 h1144
22.06 77km JPN22. Ultramarathon Okumusashi 10:37:36 h1079
16.05 103km JPN4th Tojinbo 103 km Ultramarathon 14:56:22 h174
19.04 100km JPN25th Fuji 5 Lakes 100 km Challenge 12:55:34 h780
2014
12.10 100km JPN10th Echigo Kubikino 100km Ultramarathon 13:24:06 h1233
14.09 100km JPN14th Tango 100 km Ultramarathon 13:42:47 h1150
20.04 100km JPN24th Fuji 5 Lakes 100 km Challenge 13:17:50 h910
2013
20.10 60km JPN19th River Shimanto 60km 6:56:07 h102