Ming-Xin (張明信) Chang

Born : 1955 Cat. M70 Ultrarunner since 2001

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 ?

Taiwan

54,3%

Rank quotient ?This runner's calculation uses 59 eligible race(s): Σ(rank − 1) = 5 474; Σ finishers = 10 082. 5 474 / 10 082 × 100 = 54.29%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed59

Km — ultra races2 865 km

Longest race83,7 km

5th Soochow/Taipei 12h Ultramarathon — 27/3/2004

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Road100,0%

Records

50 km4h59'36 6 h49,01 km 12 h83,73 km

HISTORY

59 race(s)

Date		Race	Perf.	Rk
2022
12.03	45km	11th Southern Cross-Island Highway 45 km Ultra Marathon	7:13:28 h	96
2020
08.03	45km	2nd Guoxian Ultra Run	5:58:40 h	23
07.03	45km	3rd Daxingshan Temple Ultra Run	6:09:37 h	17
09.02	46km	5th Ruins of Long-teng Bridge Ultra Run	6:00:38 h	12
25.01	51km	13th Chinese New Year Marathon - Rat	6:55:30 h	103
2019
11.10	53km	5th Jhen-wu-shan UltraMaraton	7:40:54 h	142
14.07	45.8km	4th Lovers' Gorge Ultra Run	6:47:11 h	257
29.06	46km	1st Cancer Ultra Run	7:59:02 h	11
23.06	45km	2nd Pinli Ultra Run	6:51:12 h	129
17.03	46.1km	1st Old Tree Tour Ultra Run	5:58:42 h	118
2018
09.09	46km	1st Luminous Bird's Daughter Full Moon Ultra Run	7:02:43 h	73
29.07	46.1km	3rd Tianxishui Ultra Run	6:58:06 h	302
22.07	46km	3rd Lovers' Gorge Ultra Run	7:16:51 h	220
14.07	46km	2nd Zhuhu Ultra Run	8:05:12 h	21
08.07	46.4km	3rd Run to Malabon UltraMarathon	8:54:08 h	51
17.06	45km	2nd Taian, Houli to Dajia Ultra Run	7:38:56 h	15
12.05	46km	3rd Pailan Chingchuan Ultra Run	6:45:48 h	19
20.01	46km	2nd Shiguanyin Temple Ultra Run	6:24:36 h	8
07.01	47km	2nd Roaming 139 Ultramarathon	5:49:42 h	38
2017
11.11	46km	3rd Meinong Ultramarathon	6:12:19 h	89
19.08	45km	2nd Hengshan crossing Ultra Run	6:57:01 h	19
06.08	46.5km	2nd Tianxishui Ultra Run	6:43:39 h	142
23.07	45km	2nd Lovers' Gorge Ultra Run	6:40:46 h	234
02.07	45km	6th Chenhsipao volunteer Ultra Marathon 45 km	6:50:50 h	44
24.06	47.5km	1st Baldcypress Ultra Run	7:43:27 h	31
10.06	45.5km	1st 17 Coast style Ultra Run	7:50:37 h	30
27.05	45km	2nd Dalu Forest Road East Ultra Run	7:17:26 h	14
20.05	50km	4th Dakeng Ultra Run - 50 km	7:32:11 h	165
01.04	45km	2nd Nanchuang to Wuchihshan Ultra Run	5:41:47 h	18
19.03	8h	6th National Taipei University 8H Ultra Marathon	47.696 km	97
04.03	46.6km	2nd Grapefruit scent Ultramarathon	5:52:25 h	117
28.01	51.8km	10th Tainan Branch Friendship Cup Chinese New Year Marathon	6:51:48 h	274
01.01	52.9km	1st Roaming 139 Ultramarathon	7:30:29 h	81
2016
17.12	45km	3rd Hsinchu Bao-shan Second Reservoir Ultramarathon	5:47:50 h	133
11.09	45.5km	1st Wenshui Ultramarathon	7:29:19 h	20
30.07	45km	1st Lovers' Gorge Ultra Run	6:13:13 h	132
23.07	46.5km	1st Tianxishui Ultra Run	6:31:35 h	135
19.06	45.5km	1st Ruins of Long-teng Bridge Ultra Run	7:23:06 h	38
2008
03.08	50km	2nd Kaohsiung Summer 50km Ultramarathon	7:08:35 h	296
18.05	50km	1st Youth Park Cup 50K cross-country Ultra Marathon	7:10:59 h	343
2007
02.09	50km	1st Kaohsiung Summer 50km Ultramarathon	5:54:14 h	72
03.03	50km	3rd Eastern Valley Int. 50k Ultra-marathon Race	5:32:43 h	43
28.01	50km	5th Yung Ho 50K Ultra-marathon	5:27:41 h	377
2006
25.11	50km	2nd NTPU 50K Ultra Marathon	5:16:14 h	22
12.11	50km	1st Liuqiu Ultramarathon	5:05:54 h	60
18.03	50km	2nd Eastern Valley Int. 50k Ultra-marathon Race	5:12:39 h	38
19.02	50km	4th Yung Ho 50K Ultra-marathon	5:13:29 h	169
2005
20.11	50km	1st NTPU 50K Ultra Marathon	4:59:56 h	47
28.05	50km	3rd Yung Ho 50K Ultra-marathon	4:59:36 h	88
30.04	50km	1st Eastern Valley Int. 50k Ultra-marathon Race	5:05:40 h	13
13.03	50km	1st Good Comer Ultramarathon	5:11:55 h	48
2004
29.05	50km	2nd Yung Ho 50K Ultra-marathon	6:02:32 h	138
27.03	12h	5th Soochow/Taipei 12h Ultramarathon	83.729 km	26
2003
16.11	50km	50km Taipei	5:50:01 h	111
31.05	50km	1st Yung Ho 50K Ultra-marathon	5:29:35 h	39
16.03	6h	Yung Ho 6h Ultramarathon	47.610 km	22
18.01	50km	Taiwan 50K Championships	5:41:01 h	74
2002
15.06	6h	1st Yunghe 6h Endurance Run	49.005 km	10
2001
17.06	65km	2nd Yangming shan Ultramarathon	12:01:00 h	29

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	27/3/2004	5th Soochow/Taipei 12h Ultramarathon	83,73	×1
✓ 2	17/6/2001	2nd Yangming shan Ultramarathon	65,00	×1
✓ 3	11/10/2019	5th Jhen-wu-shan UltraMaraton	53,00	×1
✓ 4	1/1/2017	1st Roaming 139 Ultramarathon	52,90	×1
✓ 5	28/1/2017	10th Tainan Branch Friendship Cup Chinese New Year Marathon	51,80	×1
✓ 6	25/1/2020	13th Chinese New Year Marathon - Rat	51,00	×1
✓ 7	20/5/2017	4th Dakeng Ultra Run - 50 km	50,00	×1
✓ 8	3/8/2008	2nd Kaohsiung Summer 50km Ultramarathon	50,00	×1
✓ 9	18/5/2008	1st Youth Park Cup 50K cross-country Ultra Marathon	50,00	×1
✓ 10	2/9/2007	1st Kaohsiung Summer 50km Ultramarathon	50,00	×1
✓ 11	3/3/2007	3rd Eastern Valley Int. 50k Ultra-marathon Race	50,00	×1
✓ 12	28/1/2007	5th Yung Ho 50K Ultra-marathon	50,00	×1
✓ 13	25/11/2006	2nd NTPU 50K Ultra Marathon	50,00	×1
✓ 14	12/11/2006	1st Liuqiu Ultramarathon	50,00	×1
✓ 15	18/3/2006	2nd Eastern Valley Int. 50k Ultra-marathon Race	50,00	×1
✓ 16	19/2/2006	4th Yung Ho 50K Ultra-marathon	50,00	×1
✓ 17	20/11/2005	1st NTPU 50K Ultra Marathon	50,00	×1
✓ 18	28/5/2005	3rd Yung Ho 50K Ultra-marathon	50,00	×1
✓ 19	30/4/2005	1st Eastern Valley Int. 50k Ultra-marathon Race	50,00	×1
✓ 20	13/3/2005	1st Good Comer Ultramarathon	50,00	×1
✓ 21	29/5/2004	2nd Yung Ho 50K Ultra-marathon	50,00	×1
✓ 22	16/11/2003	50km Taipei	50,00	×1
✓ 23	31/5/2003	1st Yung Ho 50K Ultra-marathon	50,00	×1
✓ 24	18/1/2003	Taiwan 50K Championships	50,00	×1
✓ 25	15/6/2002	1st Yunghe 6h Endurance Run	49,01	×1
✓ 26	19/3/2017	6th National Taipei University 8H Ultra Marathon	47,70	×1
✓ 27	16/3/2003	Yung Ho 6h Ultramarathon	47,61	×1
✓ 28	24/6/2017	1st Baldcypress Ultra Run	47,50	×1
✓ 29	7/1/2018	2nd Roaming 139 Ultramarathon	47,00	×1
✓ 30	4/3/2017	2nd Grapefruit scent Ultramarathon	46,60	×1
✓ 31	6/8/2017	2nd Tianxishui Ultra Run	46,50	×1
✓ 32	23/7/2016	1st Tianxishui Ultra Run	46,50	×1
✓ 33	8/7/2018	3rd Run to Malabon UltraMarathon	46,40	×1
✓ 34	17/3/2019	1st Old Tree Tour Ultra Run	46,10	×1
✓ 35	29/7/2018	3rd Tianxishui Ultra Run	46,10	×1
✓ 36	9/2/2020	5th Ruins of Long-teng Bridge Ultra Run	46,00	×1
✓ 37	29/6/2019	1st Cancer Ultra Run	46,00	×1
✓ 38	9/9/2018	1st Luminous Bird's Daughter Full Moon Ultra Run	46,00	×1
✓ 39	22/7/2018	3rd Lovers' Gorge Ultra Run	46,00	×1
✓ 40	14/7/2018	2nd Zhuhu Ultra Run	46,00	×1
✓ 41	12/5/2018	3rd Pailan Chingchuan Ultra Run	46,00	×1
✓ 42	20/1/2018	2nd Shiguanyin Temple Ultra Run	46,00	×1
✓ 43	11/11/2017	3rd Meinong Ultramarathon	46,00	×1
✓ 44	14/7/2019	4th Lovers' Gorge Ultra Run	45,80	×1
✓ 45	10/6/2017	1st 17 Coast style Ultra Run	45,50	×1
46	11/9/2016	1st Wenshui Ultramarathon	45,50	×1
47	19/6/2016	1st Ruins of Long-teng Bridge Ultra Run	45,50	×1
48	12/3/2022	11th Southern Cross-Island Highway 45 km Ultra Marathon	45,00	×1
49	8/3/2020	2nd Guoxian Ultra Run	45,00	×1
50	7/3/2020	3rd Daxingshan Temple Ultra Run	45,00	×1
51	23/6/2019	2nd Pinli Ultra Run	45,00	×1
52	17/6/2018	2nd Taian, Houli to Dajia Ultra Run	45,00	×1
53	19/8/2017	2nd Hengshan crossing Ultra Run	45,00	×1
54	23/7/2017	2nd Lovers' Gorge Ultra Run	45,00	×1
55	2/7/2017	6th Chenhsipao volunteer Ultra Marathon 45 km	45,00	×1
56	27/5/2017	2nd Dalu Forest Road East Ultra Run	45,00	×1
57	1/4/2017	2nd Nanchuang to Wuchihshan Ultra Run	45,00	×1
58	17/12/2016	3rd Hsinchu Bao-shan Second Reservoir Ultramarathon	45,00	×1
59	30/7/2016	1st Lovers' Gorge Ultra Run	45,00	×1