Gyeong-Seok (서경석) Seo
ID 19619
Born : 1953 Cat. M70 Ultrarunner since 2000 KOR
39
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
80
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
4
Countries visited ?ITAItalyJPNJapanKORSouth KoreaNEDNetherlands
29,8%
Rank quotient ?This runner's calculation uses 40 eligible race(s): Σ(rank − 1) = 1 040; Σ finishers = 3 491. 1 040 / 3 491 × 100 = 29.79%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed40
Km — ultra races7 886 km
> 100 km20
> 160 km15
> 200 km12
> 24h8
> 48h1
Longest race1 500,0 km
1st Republic of Korea 1500 km Ultra Marathon — 21/9/2007

Km per year (ultra races)

50
1 race
2022
100
1 race
2023
2024
2025
2026

Race types (share of distance)

Road95,5%
Trail4,5%

Wins & podiums (ultra)

🏆 Win6
🏆 Win M6
🏅 Top 320
🏅 Top 3 M21
Longest winning streak1
Current streak0

Records

50 km6h58'00100 km8h25'4024 h230,03 km48 h130,40 km

HISTORY

41 race(s)
DateRacePerf.Rk
2023
10.06 100km KOR20th Gwangju 100km Ultra Marathon 16:25:00 h136
2022
16.07 50km KOR7th Happy Leg Ultramarathon 6:58:00 h330
2021
03.04 100km KOR8th SeJong Ultramarathon 14:10:00 h73
2019
27.04 100km KOR2nd Baekyongjong Gungil 100 km Ultra Marathon 16:45:23 h19
2017
18.02 50km KOR13th Busan Beach Ultramarathon 50km 7:40:00 h32
2014
09.08 101km KOR1st Geumcheon Ultramarathon 101 km 13:42:24 h49
19.07 88km KOR1st Jecheon Ultra Marathon 11:10:00 h2 🥈
21.06 100km KOR1st Pocheon Ultra Marathon - 100 km 13:15:14 h9
2012
21.04 108km KORBudda 108K Ultramarathon 12:32:18 h7
2011
08.10 100km KOR5th Youngdong Dried Persimmon Ultramarathon 11:38:58 h10
2010
02.10 100km KOR5th Gangjin Ultra Marathon 9:01:00 h1 🏆
09.09 308km KOR11th Trans Korea 308 km West to East 44:51:00 h2 🥈
2009
12.07 51km KOR1st Seoul-Chuncheon Expressway Opening Ceremony - 51km 3:54:49 h14
02.05 24h ITAIAU 24h WC Bergamo (7° 24 ore del Delfino) 160.785 km120
02.05 24h ITAOpen race at IAU 24h WC & EC Bergamo (7° 24 ore del Delfino) 160.785 km131
2008
18.10 24h KOROpen race at IAU 24h WC Seoul 215.720 km1 🏆
02.08 100km KOR3rd Gangjin Ultra Marathon 10:05:50 h6
28.06 100km KOR1st Jingogae Daegwanryeong Ultra 100 10:37:48 h2 🥈
19.04 250km JPN15. Sakura Michi Kokusai Nature Run 34:28:00 h44
2007
21.09 1500km KOR1st Republic of Korea 1500 km Ultra Marathon 14d 23:24:00 h1 🏆
04.05 48h KORKUMF 48H Cup 130.400 km3 🥉
2006
31.12 100km KOR1st Gangjin Ultra Marathon 8:51:46 h1 🏆
14.09 308km KOR7th Trans Korea 308 km West to East 44:44:00 h2 🥈
15.07 537km KOR3rd Trans Korea 537K South to North 4d 08:02:00 h1 🏆
10.06 100km KOR4th Gwangju 100km Ultra Marathon 10:31:00 h3 🥉
15.04 60km KOR2nd Seoul Namsan Ultra Marathon 60 km 5:06:00 h2 🥈
25.03 100km KOR2nd Jeonju 100km Ultra Marathon 9:16:00 h5
2005
01.10 100km KOR1st Daejeon Yusung Hot spring Ultramarathon 10:15:54 h5
14.05 24h KORKUMF 24H Cup 215.500 km4
2004
26.11 311km KOR5th Trans Korea 311 km West to East 42:41:00 h1 🏆
02.05 100km KOR100 km Ultra-Marathon Seoul 8:25:40 h3 🥉
2003
11.10 12h NEDOpen race at IAU 24h WC & EC Uden - 12h Split 122.549 km39
11.10 24h NEDIAU 24h WC Uden 230.027 km21
15.06 100km KOR1st Gwangju 100km Ultra Marathon 9:51:00 h3 🥉
05.04 24h KOR2nd Korea 24 Hours Race 202.700 km2 🥈
2002
23.11 24h KOR1st Korea 24 Hours Race 186.600 km3 🥉
01.09 640km KOR1st Chungju to Imjingak 640K Ultra Marathon 8d 12:52:00 h3 🥉
22.06 100km KOR1st Cheongju Ultra Marathon 12:59:00 h20
2001
13.05 105.4km KOR2nd Hangang Park Ultra Marathon 10:46:04 h2 🥈
2000
10.09 311km KOR1st Trans Korea 311 km West to East 3d 03:30:00 h5
16.07 105.4km KOR1st Hangang Park Ultra Marathon 12:52:13 h2 🥈