Eitarou (吉川英太郎) Yoshikawa
ID 180183
Born : 1982 Cat. M40 Ultrarunner since 2009 JPN
36
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
44
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 36 eligible race(s): Σ(rank − 1) = 2 541; Σ finishers = 16 699. 2 541 / 16 699 × 100 = 15.22%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed36
Km — ultra races2 691 km
> 100 km6
Longest race115,1 km
3rd Aso Volcano Trail — 10/5/2025

Km per year (ultra races)

542
7 races
2022
50
1 race
2023
265
3 races
2024
355
5 races
2025
2026

Race types (share of distance)

Road19,9%
Trail80,1%

Records

50 km4h10'18100 km11h52'2350 mi13h23'48

HISTORY

36 race(s)
DateRacePerf.Rk
2025
29.12 70km JPN6th Kyoto Great Round 70 km 12:08:29 h6
21.12 50km JPN8th Okinawa 50km Ultramarathon 4:10:18 h8
10.05 115.1km JPN3rd Aso Volcano Trail 17:32:18 h57
26.04 70km JPN4th KAI 70k 10:09:19 h55
15.03 50km JPN11th Mt. Hiei Int. 50 km Trail Run 7:45:53 h56
2024
22.09 80km JPN6th Flash Trail Challenge 80km 15:06:00 h24
11.05 115.1km JPN2nd Aso Volcano Trail 19:38:45 h82
26.04 70km JPN3rd KAI 70k 11:11:11 h117
2023
17.12 50km JPN6th Okinawa 50km Ultramarathon 4:24:38 h12
2022
20.11 106km JPN8th FunTrails100K Round 22:10:09 h95
22.10 80km JPN2. Jungle Guruguru Max - 80 km 13:23:48 h4
28.08 75km JPN9th Tsukuba Renjyo 70 km Road & Trail Run 8:27:13 h4
06.08 61.3km JPN3rd Osaka Natsunojin Kurondo Rondo - 60 km 10:14:19 h6
11.06 100.8km JPN2nd Okushinano 100 15:30:23 h99
29.04 50km JPN15th Ishioka Trail Run 5:09:43 h10
23.04 69km JPN1st KAI 69k 11:02:36 h32
2021
25.04 50km JPN14th Ishioka Trail Run 5:16:10 h31
2018
12.05 108.7km JPN2nd Aso Round Trail 20:40:36 h58
2016
28.08 70km JPN3rd Tsukuba Renjyo 70 km Road & Trail Run 7:38:46 h13
28.05 50km JPN8th OSJ Okukuji Trail 50k 9:46:11 h44
29.04 49km JPN9th Ishioka Trail Run 5:08:04 h15
2015
19.09 100km JPN18th Jonaizaka 100 km Ultra Marathon 11:52:23 h23
30.08 70km JPN2nd Tsukuba Renjyo 70 km Road & Trail Run 8:23:18 h31
19.07 65km JPN6th Nozawa Onsen 4100D Mountain Trail 8:39:48 h20
22.06 77km JPN22. Ultramarathon Okumusashi 8:10:04 h284
2014
26.04 88km JPN3rd Shizuoka to Yamanashi 19:07:16 h198
2013
29.09 50km JPN6th OSJ Adatara Trail 50K 7:59:11 h30
07.09 100km JPN2nd OSJ Yatsugatake Super Trail 100 km race 14:42:00 h54
13.07 65km JPN4th Nozawa Onsen 4100D Mountain Trail 9:09:25 h48
26.04 84km JPN2nd Shizuoka to Yamanashi 13:26:00 h47
13.04 70km JPN8th Toda Saiko 70 km 6:52:18 h57
2011
30.04 112km JPN21st Fuji 5 Lakes 112 km Challenge 13:48:02 h259
2010
10.10 71.5km JPN18th Hasetsune Cup - Japan Mountain Endurance Race 12:51:05 h252
01.08 77km JPN17. Ultramarathon Okumusashi 8:15:27 h157
2009
11.10 71.5km JPN17th Hasetsune Cup - Japan Mountain Endurance Race 12:03:17 h242
12.04 50km JPN1st OSJ Okukuji Trail 50k 10:27:09 h47