Satoshi (横川智史) Yokokawa
ID 696555
Born : 1986 Cat. M40 Ultrarunner since 2006 JPN
26
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
1
Countries visited ?JPNJapan
14,5%
Rank quotient ?This runner's calculation uses 26 eligible race(s): Σ(rank − 1) = 3 532; Σ finishers = 24 411. 3 532 / 24 411 × 100 = 14.47%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed26
Km — ultra races2 584 km
> 100 km3
Longest race118,0 km
33th Fuji 5 Lakes 118 km Challenge — 16/4/2023

Km per year (ultra races)

200
2 races
2022
418
4 races
2023
260
3 races
2024
2025
100
1 race
2026

Race types (share of distance)

Road100,0%

Wins & podiums (ultra)

🏆 Win2
🏆 Win M2
🏅 Top 32
🏅 Top 3 M2
Longest winning streak1
Current streak0

Records

100 km8h26'42

HISTORY

26 race(s)
DateRacePerf.Rk
2026
17.05 100km JPN32th Yatsugatake Nobeyama 100 km 11:28:37 h215
2024
20.10 100km JPN30th River Shimanto 100km 9:33:33 h105
15.09 60km JPN22th Tango 60 km Ultramarathon 5:49:39 h29
19.05 100km JPN30th Yatsugatake Nobeyama 100 km 10:39:31 h98
2023
17.09 100km JPN21th Tango 100 km Ultramarathon 11:08:25 h114
21.05 100km JPN29th Yatsugatake Nobeyama 100 km 12:59:08 h336
16.04 118km JPN33th Fuji 5 Lakes 118 km Challenge 11:11:02 h22
12.03 100km JPN5th Ibaraki 100k Ultra Marathon 8:26:42 h10
2022
22.05 100km JPN28th Yatsugatake Nobeyama 100 km 10:50:13 h97
17.04 100km JPN32th Fuji 5 Lakes 100 km Challenge 9:28:02 h69
2019
09.06 100km JPN8th Hida Takayama 100 km Ultramarathon 9:37:48 h88
02.06 100km JPN2nd Nanto 100 km Ultramarathon 9:05:20 h7
25.05 103km JPN8th Tojinbo 103 km Ultramarathon 9:47:59 h1 🏆
21.04 100km JPN29th Fuji 5 Lakes 100 km Challenge 8:51:27 h24
24.03 100km JPN1st Ibaraki 100k Ultra Marathon 9:05:38 h38
2018
09.09 100km JPN6th 100 km Ultramarathon Hakusan-Shirakawago 9:23:27 h21
24.06 100km JPN33. Lake Saroma 100 km Ultramarathon 8:38:15 h104
03.06 100km JPN1st Nanto 100 km Ultramarathon 9:35:13 h8
26.05 103km JPN7th Tojinbo 103 km Ultramarathon 9:38:05 h1 🏆
22.04 100km JPN28th Fuji 5 Lakes 100 km Challenge 9:21:43 h37
2017
23.04 100km JPN27th Fuji 5 Lakes 100 km Challenge 10:21:49 h197
2016
12.06 100km JPN5th Hida Takayama 100 km Ultramarathon 10:46:01 h177
05.06 100km JPN4th Tokyo Shibamata 100 km 11:11:11 h290
2015
07.06 100km JPN4th Hida Takayama 100 km Ultramarathon 13:23:59 h830
2007
14.10 100km JPN13th River Shimanto 100km 12:04:39 h475
2006
17.09 100km JPN6th Tango 100 km Ultramarathon 11:59:42 h165