Yuji (境祐司) Sakai
ID 5006
Born : 1968 Cat. M55 Ultrarunner since 1999 JPN
33
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
62
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
5
Countries visited ?FRAFranceGREGreeceITAItalyJPNJapanKORSouth Korea
8,3%
Rank quotient ?This runner's calculation uses 34 eligible race(s): Σ(rank − 1) = 1 482; Σ finishers = 17 768. 1 482 / 17 768 × 100 = 8.34%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed34
Km — ultra races5 214 km
> 100 km15
> 160 km14
> 200 km14
> 24h10
Longest race264,4 km
IAU 24h WC Seoul — 18/10/2008

Km per year (ultra races)

2022
2023
2024
2025
2026

Race types (share of distance)

Road87,6%
Trail12,4%

Wins & podiums (ultra)

🏆 Win3
🏆 Win M3
🏅 Top 310
🏅 Top 3 M12
Longest winning streak1
Current streak0

Records

100 km7h53'4024 h264,39 km

HISTORY

36 race(s) · 2 split(s) nested
DateRacePerf.Rk
2017
02.05 250km JPN29. Yamaguchi 100 Hagi-O-Kan Maranic 250 km 37:59:08 h18
2016
02.07 8h JPN22nd 8-Hour Endurance Race Tokorozawa 74.658 km15
05.06 100km JPN4th Tokyo Shibamata 100 km 9:14:42 h36
2015
19.12 24h JPN10th Jingu Gaien 24 Hour Challenge 112.587 km107
12.07 8h JPN21st 8-Hour Endurance Race Tokorozawa 72.446 km23
06.06 100km JPN3rd Tokyo Shibamata 100 km 8:45:57 h22
02.05 250km JPN27. Yamaguchi 100 Hagi-O-Kan Maranic 250 km 35:53:17 h11
2014
08.11 24h JPN9th Jingu Gaien 24 Hour Challenge 200.185 km29
06.07 8h JPN20th 8-Hour Endurance Race Tokorozawa 81.150 km17
2013
09.11 24h JPN8th Jingu Gaien 24 Hour Challenge 90.070 km93
2012
07.10 24h JPN7th Jingu Gaien 24 Hour Challenge 233.490 km8
24.06 100km road race JPN27. Lake Saroma 100 km Ultramarathon 10:26:54 h476
02.05 250km JPN24. Yamaguchi 100 Hagi-O-Kan Maranic 250 km 31:25:53 h3 🥉
22.04 72km JPN22nd Fuji 5 Lakes 72 km Challenge 10:02:58 h473
2011
15.10 24h JPN6th Jingu Gaien 24 Hour Challenge 236.497 km5
30.09 245.3km GRE29. Spartathlon 24:22:24 h2 🥈
07.08 77km JPN18. Ultramarathon Okumusashi 5:29:53 h1 🏆
10.07 8h JPN17th 8-Hour Endurance Race Tokorozawa 90.888 km3 🥉
2010
27.06 100km JPN25. Lake Saroma 100 km Ultramarathon 8:08:16 h27
13.05 6h FRAIAU 24h WC Brive (Les 24 heures de Brive) - 6h Split 72.916 km5
13.05 12h FRAIAU 24h WC Brive (Les 24 heures de Brive) - 12h Split 139.370 km3 🥉
13.05 24h FRAIAU 24h WC Brive (Les 24 heures de Brive) 258.907 km4
2009
25.09 245.3km GRE27. Spartathlon 27:13:38 h9
02.05 24h ITAIAU 24h WC Bergamo (7° 24 ore del Delfino) 242.713 km4
02.05 24h ITAOpen race at IAU 24h WC & EC Bergamo (7° 24 ore del Delfino) 242.713 km4
2008
18.10 24h KORIAU 24h WC Seoul 264.389 km3 🥉
03.08 75km JPN15. Ultramarathon Okumusashi 5:54:00 h9
18.05 100km JPN14th Yatsugatake Nobeyama 100 km 9:19:17 h10
2007
22.12 24h JPN2nd Jingu Gaien 24 Hour Challenge 253.357 km1 🏆
05.08 75km JPN14. Ultramarathon Okumusashi 5:31:09 h3 🥉
20.05 100km JPN13th Yatsugatake Nobeyama 100 km 7:53:40 h1 🏆
2006
13.08 75km JPN13. Ultramarathon Okumusashi 6:11:15 h14
21.05 100km JPN12th Yatsugatake Nobeyama 100 km 8:10:24 h2 🥈
2005
30.09 245.3km GRE23. Spartathlon 32:27:30 h22
22.05 100km JPN11th Yatsugatake Nobeyama 100 km 8:12:45 h3 🥉
1999
17.10 100km JPN6th River Shimanto 100km 9:13:33 h58