Yoshiaki (土井義明) Doi
ID 459377
Born : 1971 Cat. M55 Ultrarunner since 2013 JPN
35
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
55
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
15,2%
Rank quotient ?This runner's calculation uses 35 eligible race(s): Σ(rank − 1) = 3 630; Σ finishers = 23 836. 3 630 / 23 836 × 100 = 15.23%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed38
Km — ultra races4 130 km
> 100 km14
> 160 km6
> 24h9
Longest race192,0 km
21. Hiratsuka 24 hour race — 15/9/2018

Km per year (ultra races)

504
4 races
2022
118
1 race
2023
164
2 races
2024
2025
2026

Race types (share of distance)

Road92,1%
Stage7,9%

Wins & podiums (ultra)

🏆 Win1
🏆 Win M1
🏅 Top 32
🏅 Top 3 M2
Longest winning streak1
Current streak0

Records

100 km9h05'5224 h192,00 km

HISTORY

36 race(s) · 4 stage(s) nested
DateRacePerf.Rk
2024
29.09 64km JPN11th Naeba-Sanroku Geopark Tsunan Ultramarathon 64K 6:24:58 h3 🥉
30.06 100km JPN39. Lake Saroma 100 km Ultramarathon 11:00:41 h564
2023
01.10 64km JPN10th Naeba-Sanroku Geopark Tsunan Ultramarathon 64K 6:20:37 h5
19.03 54.2km JPN11th Arakawa Riverside Journey Stage Race - Stage 2 5:25:49 h5
2022
02.10 100km JPN9th Naeba-Sanroku Geopark Tsunan Ultramarathon 100K 11:14:56 h8
30.07 24h JPN22th 24-hour relay & solo marathon Kobe 149.600 km23
17.04 118km JPN32th Fuji 5 Lakes 118 km Challenge 13:14:32 h119
21–22.03 136km/2stages JPN10th Arakawa Riverside Journey Stage Race 16:15:00 h12
2021
05.12 100km JPN1st Tokyo Edogawa Ultra Marathon - 100 km 10:15:36 h38
25.04 100km JPN6th Tokyo Ultra Marathon - 100 km 10:27:21 h24
03–04.04 136km/2stages JPN9th Arakawa Riverside Journey Stage Race 13:54:00 h1 🏆
27.02 91km JPN11th Little Edo 91k 9:15:53 h5
2020
04.10 100km JPN7th Naeba-Sanroku Geopark Tsunan Ultramarathon 100K 10:08:03 h14
22.08 63.7km JPN1st Toda Aya Lake Ultra Marathon 6:08:51 h15
2019
07.10 118km JPN1st Fuji 5 Lakes 118 km Autumn Challenge 12:01:53 h15
03.08 24h JPN19th 24-hour relay & solo marathon Kobe 166.600 km9
30.06 100km JPN34. Lake Saroma 100 km Ultramarathon 10:14:35 h466
01.06 24h JPN18. Green Charity Marathon Tokyo - Hard Run 24H 168.000 km13
19.05 100km JPN25th Yatsugatake Nobeyama 100 km 10:27:51 h128
23.02 91km JPN9th Little Edo 91km 9:43:21 h7
2018
10.11 24h JPN13th Jingu Gaien 24 Hour Challenge 176.881 km58
15.09 24h JPN21. Hiratsuka 24 hour race 192.000 km6
24.06 100km JPN33. Lake Saroma 100 km Ultramarathon 10:21:58 h548
02.06 24h JPN17. Green Charity Marathon Tokyo - Hard Run 24H 182.500 km9
22.04 118km JPN28th Fuji 5 Lakes 118 km Challenge 12:53:53 h96
2017
11.11 24h JPN12th Jingu Gaien 24 Hour Challenge 157.626 km76
21.10 100km JPN8th Inagawa 100km Ultra-Marathon 12:10:26 h27
09.09 24h JPN20. Hiratsuka 24 hour race 174.730 km7
11.06 100km JPN13th Iwate Ginga 100km Marathon Challenge 9:36:38 h76
23.04 118km JPN27th Fuji 5 Lakes 118 km Challenge 12:35:23 h93
2016
17.12 24h JPN11th Jingu Gaien 24 Hour Challenge 90.070 km137
09.10 100km JPN11th Echigo Kubikino 100km Ultramarathon 9:24:45 h54
26.06 100km JPN31. Lake Saroma 100 km Ultramarathon 9:29:02 h283
2015
28.06 100km JPN30. Lake Saroma 100 km Ultramarathon 9:05:52 h193
2014
29.06 100km JPN29. Lake Saroma 100 km Ultramarathon 10:35:14 h354
2013
30.06 100km road race JPN28. Lake Saroma 100 km Ultramarathon 9:24:12 h179