Yeon-Suk (정연숙) Jeong

Born : 1973 Cat. W50 Ultrarunner since 2007

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

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

56,7%

Rank quotient ?This runner's calculation uses 76 eligible race(s): Σ(rank − 1) = 6 691; Σ finishers = 11 796. 6 691 / 11 796 × 100 = 56.72%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed76

Km — ultra races10 126 km

> 100 km22

> 160 km14

> 200 km6

> 24h3

Longest race622,0 km

5th Trans Korea 622K South To North — 12/7/2011

Km per year (ultra races)

365

2022

1 030

2023

1 246

2024

400

2025

2026

Race types (share of distance)

Road82,3%

Trail17,7%

Wins & podiums (ultra)

🏆 Win0

🏆 Win F12

🏅 Top 31

🏅 Top 3 F25

Longest winning streak0

Current streak0

Records

50 km6h47'00 100 km10h29'41 50 mi10h08'15 24 h207,30 km

HISTORY

76 race(s)

Date		Race	Perf.	Rk
2025
06.06	200km	20h Water Love Nagdong River Ultramarathon 200 km	35:46:00 h	37
24.05	200km	24th Jeju-do around 200 km	34:22:52 h	24
2024
07.09	102km	18th Suncheon Bay 100 km Ultramarathon	16:06:00 h	83
07.07	537km	15th Trans Korea 537K South to North	5d 05:37:00 h	20
15.06	100km	13th Ulsan Taewha River 100 km Ultramarathon	15:20:00 h	130
31.05	200km	19h Water Love Nagdong River Ultramarathon 200 km	37:18:00 h	79
27.04	24h	KUMF 24H Cup	207.295 km	2 🥈
24.02	100km	19th Busan Beach Ultramarathon 100km	12:03:00 h	25
2023
27.10	121km	7th High Trail Nine Peaks - 9 Peaks	33:41:44 h	48
05.10	309km	23rd Trans Korea 308 km West to East	2d 08:10:00 h	8
17.06	50km	12th Ulsan Taewha River 50 km Ultramarathon	6:47:00 h	54
02.06	200km	18h Water Love Nagdong River Ultramarathon 200 km	33:56:00 h	32
13.05	100km	16th Daejeon Yusung Hot spring 100 km Ultramarathon	12:44:00 h	36
15.04	24h	KUMF 24H Cup	150.000 km	8
04.03	100km	18th Busan Beach Ultramarathon 100km	11:22:00 h	8
2022
01.10	100km	15th Daejeon Yusung Hot spring 100 km Ultramarathon	14:34:00 h	25
30.04	24h	KUMF 24H Cup	165.000 km	9
09.04	100km	18th Cheongnamdae 100km Ultra Marathon	15:59:00 h	257
2019
23.11	100km	10. KUMF 100km Cup	14:09:00 h	62
07.09	100km	13th Suncheon Bay 100 km Ultramarathon	15:41:53 h	81
18.05	100km	1st Cheongpung Cultural Ultra Marathon	16:43:00 h	258
13.01	100km	15th Busan Beach Ultramarathon 100km	12:41:00 h	20
2018
17.11	100km	3rd Busan Gulls Ultra Marathon - 100km	12:33:00 h	16
13.10	101km	12h Youngdong Dried Persimmon Ultramarathon	15:28:00 h	164
01.09	100km	12th Suncheon Bay 100 km Ultramarathon	14:50:55 h	70
03.03	100km	14th Busan Beach Ultramarathon 100km	15:26:00 h	109
2017
19.08	100km	13th Busan Summer Beach 100 km Ultra Marathon	15:51:51 h	140
17.06	50km	8th Ulsan Taewha River 50 km Ultramarathon	7:30:00 h	136
11.03	50mi	16th Jeju-do Trail 50 Mile	13:58:00 h	14
18.02	100km	13th Busan Beach Ultramarathon 100km	13:08:00 h	23
2016
08.10	101km	10th Youngdong Dried Persimmon Ultramarathon	14:53:14 h	258
20.02	100km	12th Busan Beach Ultramarathon 100km	13:21:00 h	39
2015
20.06	50km	6th Ulsan Taewha River 50 km Ultramarathon	7:37:00 h	113
2014
11.10	101km	8th Youngdong Dried Persimmon Ultramarathon	15:39:55 h	307
16.08	100km	10th Busan Summer Beach 100 km Ultra Marathon	14:36:19 h	131
21.06	100km	5th Ulsan Taewha River 100 km Ultramarathon	14:56:11 h	174
10.05	100km	7th Pilgrimage To the Holy Land 100km Ultramarathon	15:34:00 h	228
19.04	100km	Budda 108K Ultramarathon	14:47:09 h	118
22.03	100km	3rd SeJong Ultramarathon	12:49:00 h	40
01.03	100km	10th Busan Beach Ultramarathon 100km	13:12:00 h	43
2013
14.09	100km	Youngcheon Starfire Ultramarathon	14:47:15 h	144
17.08	100km	9th Busan Summer Beach 100 km Ultra Marathon	15:28:35 h	243
2012
13.10	101km	6th Youngdong Dried Persimmon Ultramarathon	15:00:30 h	230
15.09	100km	6th Suncheon Bay 100 km Ultramarathon	15:00:01 h	110
18.08	100km	8th Busan Summer Beach 100 km Ultra Marathon	14:08:45 h	114
08.07	537km	6th Trans Korea 537K South to North	4d 22:59:00 h	9
16.06	100km	3rd Ulsan Taewha River 100 km Ultramarathon	14:55:05 h	125
01.06	200km	7th Water Love Nagdong River Ultramarathon	33:20:00 h	27
19.05	100km	8th Daejeon Yusung Hot spring Ultramarathon	12:24:12 h	67
12.05	100km	6th Pohang Yeongilman Ultra Marathon 100 km	12:42:00 h	75
21.04	108km	Budda 108K Ultramarathon	14:12:58 h	31
14.04	100km	10th Cheongnamdae 100km Ultra Marathon	14:47:00 h	318
18.02	100km	8th Busan Beach Ultramarathon 100km	13:02:00 h	11
2011
19.11	65km	5th Busan 5 Dalsan-ri Ultramarathon	15:44:00 h	35
08.10	100km	5th Youngdong Dried Persimmon Ultramarathon	15:41:32 h	212
27.08	100km	5th Incheon Kanghwa Ultramarathon Festival	12:39:00 h	41
12.07	622km	5th Trans Korea 622K South To North	6d 01:36:00 h	9
18.06	100km	6th Palgongsan 100 km Ultramarathon	14:24:24 h	7
05.06	200km	6th Mulsarang Nagdong 200km Ultra Marathon	35:53:00 h	70
28.05	100km	2nd Ulsan Taewha River 100 km Ultramarathon	13:46:21 h	102
21.05	100km	7th Daejeon Yusung Hot spring Ultramarathon	14:41:00 h	181
2010
14.11	100km	2. KUMF 100km Cup	10:29:41 h	21
09.10	100km	4th Youngdong Dried Persimmon Ultramarathon	12:55:31 h	42
09.09	308km	11th Trans Korea 308 km West to East	2d 11:20:05 h	18
21.08	100km	6th Busan Summer Beach 100 km Ultra Marathon	11:42:23 h	19
10.07	100km	5th Palgongsan 100 km Ultramarathon	16:00:53 h	9
06.06	200km	5th Mulsarang Nagdong 200km Ultra Marathon	35:20:43 h	30
29.05	100km	1st Ulsan Taewha River 100 km Ultramarathon	14:00:25 h	205
15.05	100km	6th Daejeon Yusung Hot spring Ultramarathon	14:28:20 h	150
17.01	80km	6th Busan Beach Ultramarathon 80km	10:08:15 h	13
2009
10.10	100km	3rd Youngdong Dried Persimmon Ultramarathon	15:14:56 h	127
19.09	100km	3rd Suncheon Bay 100 km Ultramarathon	13:56:12 h	67
22.08	100km	5th Busan Summer Beach 100 km Ultra Marathon	14:52:21 h	240
2008
10.05	100km	2nd Pohang Yeongilman Ultra Marathon 100 km	13:52:06 h	161
05.04	50mi	3rd Daegu 9 Mountain Race 50 miles	20:31:14 h	7
2007
18.08	100km	3rd Busan Summer Beach 100 km Ultra Marathon	14:55:25 h	68

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	12/7/2011	5th Trans Korea 622K South To North	622,00	×6
✓ 2	7/7/2024	15th Trans Korea 537K South to North	537,00	×5
✓ 3	8/7/2012	6th Trans Korea 537K South to North	537,00	×5
✓ 4	5/10/2023	23rd Trans Korea 308 km West to East	309,00	×3
✓ 5	9/9/2010	11th Trans Korea 308 km West to East	308,00	×3
✓ 6	27/4/2024	KUMF 24H Cup	207,30	×2
✓ 7	6/6/2025	20h Water Love Nagdong River Ultramarathon 200 km	200,00	×2
✓ 8	24/5/2025	24th Jeju-do around 200 km	200,00	×2
✓ 9	31/5/2024	19h Water Love Nagdong River Ultramarathon 200 km	200,00	×2
✓ 10	2/6/2023	18h Water Love Nagdong River Ultramarathon 200 km	200,00	×2
✓ 11	1/6/2012	7th Water Love Nagdong River Ultramarathon	200,00	×2
✓ 12	5/6/2011	6th Mulsarang Nagdong 200km Ultra Marathon	200,00	×2
✓ 13	6/6/2010	5th Mulsarang Nagdong 200km Ultra Marathon	200,00	×2
✓ 14	30/4/2022	KUMF 24H Cup	165,00	×1
✓ 15	15/4/2023	KUMF 24H Cup	150,00	×1
✓ 16	27/10/2023	7th High Trail Nine Peaks - 9 Peaks	121,00	×1
✓ 17	21/4/2012	Budda 108K Ultramarathon	108,00	×1
✓ 18	7/9/2024	18th Suncheon Bay 100 km Ultramarathon	102,00	×1
✓ 19	13/10/2018	12h Youngdong Dried Persimmon Ultramarathon	101,00	×1
✓ 20	8/10/2016	10th Youngdong Dried Persimmon Ultramarathon	101,00	×1
✓ 21	11/10/2014	8th Youngdong Dried Persimmon Ultramarathon	101,00	×1
✓ 22	13/10/2012	6th Youngdong Dried Persimmon Ultramarathon	101,00	×1
✓ 23	15/6/2024	13th Ulsan Taewha River 100 km Ultramarathon	100,00	×1
✓ 24	24/2/2024	19th Busan Beach Ultramarathon 100km	100,00	×1
✓ 25	13/5/2023	16th Daejeon Yusung Hot spring 100 km Ultramarathon	100,00	×1
✓ 26	4/3/2023	18th Busan Beach Ultramarathon 100km	100,00	×1
✓ 27	1/10/2022	15th Daejeon Yusung Hot spring 100 km Ultramarathon	100,00	×1
✓ 28	9/4/2022	18th Cheongnamdae 100km Ultra Marathon	100,00	×1
✓ 29	23/11/2019	10. KUMF 100km Cup	100,00	×1
✓ 30	7/9/2019	13th Suncheon Bay 100 km Ultramarathon	100,00	×1
✓ 31	18/5/2019	1st Cheongpung Cultural Ultra Marathon	100,00	×1
✓ 32	13/1/2019	15th Busan Beach Ultramarathon 100km	100,00	×1
✓ 33	17/11/2018	3rd Busan Gulls Ultra Marathon - 100km	100,00	×1
✓ 34	1/9/2018	12th Suncheon Bay 100 km Ultramarathon	100,00	×1
✓ 35	3/3/2018	14th Busan Beach Ultramarathon 100km	100,00	×1
✓ 36	19/8/2017	13th Busan Summer Beach 100 km Ultra Marathon	100,00	×1
✓ 37	18/2/2017	13th Busan Beach Ultramarathon 100km	100,00	×1
✓ 38	20/2/2016	12th Busan Beach Ultramarathon 100km	100,00	×1
✓ 39	16/8/2014	10th Busan Summer Beach 100 km Ultra Marathon	100,00	×1
✓ 40	21/6/2014	5th Ulsan Taewha River 100 km Ultramarathon	100,00	×1
✓ 41	10/5/2014	7th Pilgrimage To the Holy Land 100km Ultramarathon	100,00	×1
✓ 42	19/4/2014	Budda 108K Ultramarathon	100,00	×1
✓ 43	22/3/2014	3rd SeJong Ultramarathon	100,00	×1
✓ 44	1/3/2014	10th Busan Beach Ultramarathon 100km	100,00	×1
✓ 45	14/9/2013	Youngcheon Starfire Ultramarathon	100,00	×1
✓ 46	17/8/2013	9th Busan Summer Beach 100 km Ultra Marathon	100,00	×1
✓ 47	15/9/2012	6th Suncheon Bay 100 km Ultramarathon	100,00	×1
✓ 48	18/8/2012	8th Busan Summer Beach 100 km Ultra Marathon	100,00	×1
✓ 49	16/6/2012	3rd Ulsan Taewha River 100 km Ultramarathon	100,00	×1
✓ 50	19/5/2012	8th Daejeon Yusung Hot spring Ultramarathon	100,00	×1
✓ 51	12/5/2012	6th Pohang Yeongilman Ultra Marathon 100 km	100,00	×1
✓ 52	14/4/2012	10th Cheongnamdae 100km Ultra Marathon	100,00	×1
✓ 53	18/2/2012	8th Busan Beach Ultramarathon 100km	100,00	×1
✓ 54	8/10/2011	5th Youngdong Dried Persimmon Ultramarathon	100,00	×1
✓ 55	27/8/2011	5th Incheon Kanghwa Ultramarathon Festival	100,00	×1
✓ 56	18/6/2011	6th Palgongsan 100 km Ultramarathon	100,00	×1
✓ 57	28/5/2011	2nd Ulsan Taewha River 100 km Ultramarathon	100,00	×1
✓ 58	21/5/2011	7th Daejeon Yusung Hot spring Ultramarathon	100,00	×1
✓ 59	14/11/2010	2. KUMF 100km Cup	100,00	×1
✓ 60	9/10/2010	4th Youngdong Dried Persimmon Ultramarathon	100,00	×1
✓ 61	21/8/2010	6th Busan Summer Beach 100 km Ultra Marathon	100,00	×1
✓ 62	10/7/2010	5th Palgongsan 100 km Ultramarathon	100,00	×1
✓ 63	29/5/2010	1st Ulsan Taewha River 100 km Ultramarathon	100,00	×1
✓ 64	15/5/2010	6th Daejeon Yusung Hot spring Ultramarathon	100,00	×1
✓ 65	10/10/2009	3rd Youngdong Dried Persimmon Ultramarathon	100,00	×1
✓ 66	19/9/2009	3rd Suncheon Bay 100 km Ultramarathon	100,00	×1
✓ 67	22/8/2009	5th Busan Summer Beach 100 km Ultra Marathon	100,00	×1
✓ 68	10/5/2008	2nd Pohang Yeongilman Ultra Marathon 100 km	100,00	×1
✓ 69	18/8/2007	3rd Busan Summer Beach 100 km Ultra Marathon	100,00	×1
✓ 70	11/3/2017	16th Jeju-do Trail 50 Mile	80,47	—
✓ 71	5/4/2008	3rd Daegu 9 Mountain Race 50 miles	80,47	—
✓ 72	17/1/2010	6th Busan Beach Ultramarathon 80km	80,00	—
73	19/11/2011	5th Busan 5 Dalsan-ri Ultramarathon	65,00	—
74	17/6/2023	12th Ulsan Taewha River 50 km Ultramarathon	50,00	—
75	17/6/2017	8th Ulsan Taewha River 50 km Ultramarathon	50,00	—
76	20/6/2015	6th Ulsan Taewha River 50 km Ultramarathon	50,00	—