Seok-Bae (이석배) Lee

Born : 1957 Cat. M65 Ultrarunner since 2007

DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.

100

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

Countries visited ?

South Korea

70,6%

Rank quotient ?This runner's calculation uses 81 eligible race(s): Σ(rank − 1) = 9 340; Σ finishers = 13 227. 9 340 / 13 227 × 100 = 70.61%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed81

Km — ultra races11 267 km

> 100 km25

> 160 km15

> 200 km11

Longest race622,0 km

8th Trans Korea 622K South To North — 2/7/2017

Km per year (ultra races)

608

2022

579

2023

300

2024

100

2025

2026

Race types (share of distance)

Road80,7%

Trail19,3%

Wins & podiums (ultra)

🏆 Win0

🏆 Win M0

🏅 Top 31

🏅 Top 3 M3

Longest winning streak0

Current streak0

Records

50 km6h18'09 100 km11h55'00 12 h100,00 km

HISTORY

81 race(s)

Date		Race	Perf.	Rk
2025
17.05	100km	3rd Seoul Hangang Ultra Marathon 100km	16:20:20 h	387
2024
18.05	100km	2nd Seoul Hangang Ultra Marathon 100km	14:53:00 h	167
11.05	100km	17th Daejeon Yusung Hot spring 100 km Ultramarathon	16:00:00 h	120
24.02	100km	19th Busan Beach Ultramarathon 100km	15:09:00 h	106
2023
05.10	309km	23rd Trans Korea 308 km West to East	2d 18:46:00 h	51
09.09	70km	22th Jeju-do Trail 70 km	12:25:32 h	39
17.06	100km	12th Ulsan Taewha River 100 km Ultramarathon	14:48:26 h	94
04.03	100km	18th Busan Beach Ultramarathon 100km	15:31:00 h	103
2022
15.09	308km	22th Trans Korea 308 km West to East	2d 17:52:00 h	36
28.05	100km	2nd Seoul - Pyongyang Ultra Marathon - 100 km	14:56:00 h	84
09.04	100km	18th Cheongnamdae 100km Ultra Marathon	15:22:00 h	175
12.03	100km	17th Busan Beach Ultramarathon 100km	15:50:00 h	101
2021
13.11	101.3km	20th Jeju City 100 km	14:07:57 h	56
29.05	100km	1st Seoul - Pyongyang Ultra Marathon - 100 km	14:59:10 h	61
2020
11.01	100km	16th Busan Beach Ultramarathon 100km	14:27:00 h	87
2019
23.11	100km	10. KUMF 100km Cup	14:22:00 h	67
19.09	308km	20th Trans Korea 308 km West to East	2d 15:40:00 h	67
31.08	102km	13th Incheon Kanghwa Ultramarathon Festival - 100 km	14:09:00 h	76
10.08	100km	4th Yang Yang Int. Trailrun 100km	18:10:00 h	115
03.08	100km	6th Geumcheongu Ultramarathon 100 km	16:37:00 h	94
31.05	200km	14th Water Love Nagdong River Ultramarathon 200 km	34:44:00 h	46
18.05	100km	1st Cheongpung Cultural Ultra Marathon	15:46:00 h	198
04.05	50km	KUMF 50 km Cup	6:18:09 h	2 🥈
21.04	50km	5th Korea 50K	11:24:29 h	295
14.04	100km	17th Cheongnamdae 100km Ultra Marathon	15:22:00 h	343
2018
07.10	105km	1st Cheonan Samgeori Ultramarathon - 105km	15:54:00 h	174
05.05	12h	KUMF 12H Cup	82.320 km	26
21.04	100km	8th Budda 108K Ultramarathon	16:19:00 h	116
14.04	100km	16th Cheongnamdae 100km Ultra Marathon	15:40:00 h	432
2017
25.11	100km	8. KUMF 100km Cup	11:55:00 h	35
18.11	100km	2nd Busan Gulls Ultra Marathon - 100km	14:34:00 h	44
26.08	102km	11th Incheon Kanghwa Ultramarathon Festival - 100 km	15:36:00 h	213
02.07	622km	8th Trans Korea 622K South To North	6d 05:00:00 h	32
13.05	100km	12th Daejeon Yusung Hot spring Ultramarathon	15:18:00 h	127
05.05	12h	KUMF 12H Cup	97.200 km	16
28.04	101km	13th Pilgrimage to the Holy Land 101 km Ultramarathon	15:26:00 h	8
08.04	100km	15th Cheongnamdae 100km Ultra Marathon	15:40:00 h	412
01.04	100km	6th SeJong Ultramarathon	13:52:00 h	83
11.03	200km	16th Jeju-do around 200 km	31:39:19 h	33
18.02	100km	13th Busan Beach Ultramarathon 100km	14:56:00 h	88
2016
26.11	100km	Ultra Trail Mt. Halla	21:10:00 h	21
08.10	101km	10th Youngdong Dried Persimmon Ultramarathon	15:38:50 h	393
06.08	100km	3rd Geumcheongu Ultramarathon	15:16:00 h	107
03.07	537km	8th Trans Korea 537K South to North	5d 06:24:00 h	35
28.05	100km	9th Bukhangang 100 km Ultra Marathon Race	14:15:00 h	110
21.05	100km	2nd Jeonju 100km Ultra Marathon	14:08:00 h	91
16.04	100km	6th Budda 108K Ultramarathon	16:15:12 h	107
2015
31.10	100km	1st Busan 100k Ultra Trail Race	21:54:50 h	33
17.09	312km	16th Trans Korea 312 km West to East	2d 14:43:00 h	66
08.08	100km	2nd Geumcheongu Ultramarathon	14:11:00 h	66
05.06	200km	10th Water Love Nagdong River Ultramarathon	35:26:00 h	66
23.05	100km	8th Bukhangang 100 km Ultra Marathon Race	15:41:00 h	138
10.05	52.3km	1st Korea 50K	7:58:00 h	66
18.04	50km	5th Budda 50K Ultramarathon	6:52:44 h	6
2014
11.10	101km	8th Youngdong Dried Persimmon Ultramarathon	14:57:54 h	217
06.07	350km	7th Trans Korea 537K South to North	5d 05:03:00 h	83
24.05	100km	7th Bukhangang 100 km Ultra Marathon Race	13:36:34 h	99
19.04	100km	Budda 108K Ultramarathon	15:30:45 h	148
12.04	100km	12th Cheongnamdae 100km Ultra Marathon	13:08:00 h	92
2013
12.10	101km	7th Youngdong Dried Persimmon Ultramarathon	14:32:56 h	149
07.07	622km	6th Trans Korea 622K South To North	6d 04:14:00 h	26
08.06	100km	11th Gwangju 100km Ultra Marathon	14:23:20 h	179
11.05	100km	7th Pohang Yeongilman Ultra Marathon 100 km	13:44:50 h	107
2012
06.10	100km	9. Yangyang Song-I 100 km Ultramarathon	15:03:00 h	54
19.05	100km	9th Cheonjinam Ultra Marathon Festival - 100 km	15:48:40 h	209
06.05	45km	1st Gangbuk 5 Mountain Trail Run	11:53:08 h	61
21.04	108km	Budda 108K Ultramarathon	18:10:10 h	149
2011
22.08	12h	9th 7 to 7 Ultramarathon	100.000 km	4
23.04	108km	Budda 108K Ultramarathon	15:27:15 h	52
2010
09.09	308km	11th Trans Korea 308 km West to East	2d 15:40:04 h	56
22.08	12h	8th 7 to 7 Ultramarathon	100.000 km	12
30.04	222km	6th Pilgrimage to the Holy Land 222 km Ultramarathon	39:45:00 h	16
2009
24.09	308km	10th Trans Korea 308 km West to East	2d 15:32:00 h	52
22.08	100km	5th Busan Summer Beach 100 km Ultra Marathon	15:03:57 h	263
06.06	200km	4th Mulsarang Nagdong 200km Ultra Marathon	35:18:07 h	76
09.05	100km	3rd Pohang Yeongilman Ultra Marathon 100 km	13:26:50 h	92
2008
15.06	67km	6th 5 Mountain Runda Mountain Ultra Marathon	12:39:07 h	277
12.04	100km	6th Cheongnamdae 100km Ultra Marathon	15:23:00 h	302
12.01	100km	4th Busan Beach Ultramarathon 100km	14:44:00 h	175
2007
17.06	67km	5th 5 Mountain Runda Mountain Ultra Marathon	12:37:28 h	230
14.04	100km	5th Cheongnamdae 100km Ultra Marathon	12:58:00 h	127

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	2/7/2017	8th Trans Korea 622K South To North	622,00	×6
✓ 2	7/7/2013	6th Trans Korea 622K South To North	622,00	×6
✓ 3	3/7/2016	8th Trans Korea 537K South to North	537,00	×5
✓ 4	6/7/2014	7th Trans Korea 537K South to North	350,00	×3
✓ 5	17/9/2015	16th Trans Korea 312 km West to East	312,00	×3
✓ 6	5/10/2023	23rd Trans Korea 308 km West to East	309,00	×3
✓ 7	15/9/2022	22th Trans Korea 308 km West to East	308,00	×3
✓ 8	19/9/2019	20th Trans Korea 308 km West to East	308,00	×3
✓ 9	9/9/2010	11th Trans Korea 308 km West to East	308,00	×3
✓ 10	24/9/2009	10th Trans Korea 308 km West to East	308,00	×3
✓ 11	30/4/2010	6th Pilgrimage to the Holy Land 222 km Ultramarathon	222,00	×2
✓ 12	31/5/2019	14th Water Love Nagdong River Ultramarathon 200 km	200,00	×2
✓ 13	11/3/2017	16th Jeju-do around 200 km	200,00	×2
✓ 14	5/6/2015	10th Water Love Nagdong River Ultramarathon	200,00	×2
✓ 15	6/6/2009	4th Mulsarang Nagdong 200km Ultra Marathon	200,00	×2
✓ 16	21/4/2012	Budda 108K Ultramarathon	108,00	×1
✓ 17	23/4/2011	Budda 108K Ultramarathon	108,00	×1
✓ 18	7/10/2018	1st Cheonan Samgeori Ultramarathon - 105km	105,00	×1
✓ 19	31/8/2019	13th Incheon Kanghwa Ultramarathon Festival - 100 km	102,00	×1
✓ 20	26/8/2017	11th Incheon Kanghwa Ultramarathon Festival - 100 km	102,00	×1
✓ 21	13/11/2021	20th Jeju City 100 km	101,30	×1
✓ 22	28/4/2017	13th Pilgrimage to the Holy Land 101 km Ultramarathon	101,00	×1
✓ 23	8/10/2016	10th Youngdong Dried Persimmon Ultramarathon	101,00	×1
✓ 24	11/10/2014	8th Youngdong Dried Persimmon Ultramarathon	101,00	×1
✓ 25	12/10/2013	7th Youngdong Dried Persimmon Ultramarathon	101,00	×1
✓ 26	17/5/2025	3rd Seoul Hangang Ultra Marathon 100km	100,00	×1
✓ 27	18/5/2024	2nd Seoul Hangang Ultra Marathon 100km	100,00	×1
✓ 28	11/5/2024	17th Daejeon Yusung Hot spring 100 km Ultramarathon	100,00	×1
✓ 29	24/2/2024	19th Busan Beach Ultramarathon 100km	100,00	×1
✓ 30	17/6/2023	12th Ulsan Taewha River 100 km Ultramarathon	100,00	×1
✓ 31	4/3/2023	18th Busan Beach Ultramarathon 100km	100,00	×1
✓ 32	28/5/2022	2nd Seoul - Pyongyang Ultra Marathon - 100 km	100,00	×1
✓ 33	9/4/2022	18th Cheongnamdae 100km Ultra Marathon	100,00	×1
✓ 34	12/3/2022	17th Busan Beach Ultramarathon 100km	100,00	×1
✓ 35	29/5/2021	1st Seoul - Pyongyang Ultra Marathon - 100 km	100,00	×1
✓ 36	11/1/2020	16th Busan Beach Ultramarathon 100km	100,00	×1
✓ 37	23/11/2019	10. KUMF 100km Cup	100,00	×1
✓ 38	10/8/2019	4th Yang Yang Int. Trailrun 100km	100,00	×1
✓ 39	3/8/2019	6th Geumcheongu Ultramarathon 100 km	100,00	×1
✓ 40	18/5/2019	1st Cheongpung Cultural Ultra Marathon	100,00	×1
✓ 41	14/4/2019	17th Cheongnamdae 100km Ultra Marathon	100,00	×1
✓ 42	21/4/2018	8th Budda 108K Ultramarathon	100,00	×1
✓ 43	14/4/2018	16th Cheongnamdae 100km Ultra Marathon	100,00	×1
✓ 44	25/11/2017	8. KUMF 100km Cup	100,00	×1
✓ 45	18/11/2017	2nd Busan Gulls Ultra Marathon - 100km	100,00	×1
✓ 46	13/5/2017	12th Daejeon Yusung Hot spring Ultramarathon	100,00	×1
✓ 47	8/4/2017	15th Cheongnamdae 100km Ultra Marathon	100,00	×1
✓ 48	1/4/2017	6th SeJong Ultramarathon	100,00	×1
✓ 49	18/2/2017	13th Busan Beach Ultramarathon 100km	100,00	×1
✓ 50	26/11/2016	Ultra Trail Mt. Halla (UTMH)	100,00	×1
✓ 51	6/8/2016	3rd Geumcheongu Ultramarathon	100,00	×1
✓ 52	28/5/2016	9th Bukhangang 100 km Ultra Marathon Race	100,00	×1
✓ 53	21/5/2016	2nd Jeonju 100km Ultra Marathon	100,00	×1
✓ 54	16/4/2016	6th Budda 108K Ultramarathon	100,00	×1
✓ 55	31/10/2015	1st Busan 100k Ultra Trail Race	100,00	×1
✓ 56	8/8/2015	2nd Geumcheongu Ultramarathon	100,00	×1
✓ 57	23/5/2015	8th Bukhangang 100 km Ultra Marathon Race	100,00	×1
✓ 58	24/5/2014	7th Bukhangang 100 km Ultra Marathon Race	100,00	×1
✓ 59	19/4/2014	Budda 108K Ultramarathon	100,00	×1
✓ 60	12/4/2014	12th Cheongnamdae 100km Ultra Marathon	100,00	×1
✓ 61	8/6/2013	11th Gwangju 100km Ultra Marathon	100,00	×1
✓ 62	11/5/2013	7th Pohang Yeongilman Ultra Marathon 100 km	100,00	×1
✓ 63	6/10/2012	9. Yangyang Song-I 100 km Ultramarathon	100,00	×1
✓ 64	19/5/2012	9th Cheonjinam Ultra Marathon Festival - 100 km	100,00	×1
✓ 65	22/8/2011	9th 7 to 7 Ultramarathon	100,00	×1
✓ 66	22/8/2010	8th 7 to 7 Ultramarathon	100,00	×1
✓ 67	22/8/2009	5th Busan Summer Beach 100 km Ultra Marathon	100,00	×1
✓ 68	9/5/2009	3rd Pohang Yeongilman Ultra Marathon 100 km	100,00	×1
✓ 69	12/4/2008	6th Cheongnamdae 100km Ultra Marathon	100,00	×1
✓ 70	12/1/2008	4th Busan Beach Ultramarathon 100km	100,00	×1
✓ 71	14/4/2007	5th Cheongnamdae 100km Ultra Marathon	100,00	×1
✓ 72	5/5/2017	KUMF 12H Cup	97,20	—
✓ 73	5/5/2018	KUMF 12H Cup	82,32	—
74	9/9/2023	22th Jeju-do Trail 70 km	70,00	—
75	15/6/2008	6th 5 Mountain Runda Mountain Ultra Marathon	67,00	—
76	17/6/2007	5th 5 Mountain Runda Mountain Ultra Marathon	67,00	—
77	10/5/2015	1st Korea 50K	52,30	—
78	4/5/2019	KUMF 50 km Cup	50,00	—
79	21/4/2019	5th Korea 50K	50,00	—
80	18/4/2015	5th Budda 50K Ultramarathon	50,00	—
81	6/5/2012	1st Gangbuk 5 Mountain Trail Run	45,00	—