Cheng-Yen (戴政彥) Tai

Born : 1979 Cat. M45 Ultrarunner since 2017

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 ?

India

Japan

Taiwan

12,6%

Rank quotient ?This runner's calculation uses 79 eligible race(s): Σ(rank − 1) = 1 987; Σ finishers = 15 731. 1 987 / 15 731 × 100 = 12.63%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed88

Km — ultra races7 682 km

> 100 km22

> 160 km6

> 200 km3

> 24h6

Longest race410,0 km

6th Around Guanshan Ultramarathon Stage Race — 15/8/2020

Km per year (ultra races)

941

2022

1 377

2023

501

2024

429

2025

154

2026

Race types (share of distance)

Road91,1%

Trail0,7%

Stage8,2%

Wins & podiums (ultra)

🏆 Win18

🏆 Win M19

🏅 Top 330

🏅 Top 3 M31

Longest winning streak4

Current streak0

Records

50 km4h35'36 100 km8h48'45 100 mi17h39'45 12 h59,65 km 24 h205,23 km

HISTORY

81 race(s) · 11 stage(s) nested · 3 split(s) nested

Date		Race	Perf.	Rk
2026
01.03	50km	9th Fencihu 50 km Ultra Run	4:49:05 h	4
08.02	104km	9th 800 Heroes - Territory Southward 104km	13:44:25 h	25
2025
28.09	14h	1st Luzhu Ultra Marathon - 14h	84.400 km	65
02.08	45km	1st Shuangxi to Wushi Ultra Run	6:22:33 h	4
20.04	100km	35th Fuji 4 Lakes 100 km Challenge	10:34:10 h	213
23.02	100km	8th Fencihu 100 km Ultra Run	11:45:00 h	31
12.01	100km	11th Zhenxibao (Cinsbu) 100 km Ultramarathon	11:12:32 h	19
2024
15.12	100.5km	7th 800 Heroes - Overlord of KinMen 100km	11:35:58 h	5
22.11	100km	13th Yilan Dongshan River 100km Ultra-Marathon Night Run	10:04:34 h	5
21.04	100km	34th Fuji 4 Lakes 100 km Challenge	9:53:57 h	113
03.03	100km	7th Fencihu 100 km Ultra Run	10:05:19 h	7
21.01	100km	10th Zhenxibao (Cinsbu) 100 km Ultramarathon	12:37:00 h	82
2023
24.12	100km	6th Shancheng 100 km Ultramarathon	8:48:45 h	2 🥈
01.12	24h	IAU 24h WC Taipei (Open)	154.000 km	24
01.12	24h	IAU 24h WC Taipei (all races combined)	154.000 km	228
01.12	12h	IAU 24h WC Taipei - 12h Split	114.000 km	188
04.11	100km	9th Buddha's Palm 100km Ultramarathon	11:13:56 h	2 🥈
17.09	100km	1st Huashan 100 KM	9:56:56 h	3 🥉
30.07	100km	IAU 100 km Asia and Oceania Championships	10:59:49 h	26
27.05	24h	2nd Hirosaki 24h Ultra Run	131.250 km	53
13.05	12h	8th National Taipei University 12H Ultra Marathon	59.650 km	151
26.02	100km	6th Fencihu 100 km Ultra Run	10:06:56 h	4
11.02	24h	12th Taipei 24hr Ultra Marathon	178.213 km	18
11.02	100km	12th Taipei 24hr Ultra Marathon - 100km Split	10:35:18 h	16
11.02	12h	12th Taipei 24hr Ultra Marathon - 12h Split	112.998 km	11
11.02	100mi	12th Taipei 24hr Ultra Marathon - 100mi Split	18:28:17 h	10
08.01	100km	9th Zhenxibao (Cinsbu) 100 km Ultramarathon	11:27:41 h	35
01.01	100km	6th 800 Heroes - Overlord of Taizhong 100km	13:14:46 h	21
2022
25.12	100km	5th Shancheng 100 km Ultramarathon	9:33:29 h	11
12.11	100mi	5th 800 Heroes - Overlord of Huatan 100mi	20:27:00 h	2 🥈
23.10	45km	7th TUR Charity UltraMarathon	6:04:28 h	82
16.10	101km	5th 800 Heroes - Overlord of Shuishalian 101 km	11:45:18 h	1 🏆
04.10	49km	1st Mountains to Sea Greenway 3. Danayigu to Alishan	7:09:09 h	1 🏆
03.10	58km	1st Mountains to Sea Greenway 2. Zengwen Reservoir to Danayigu	6:46:11 h	1 🏆
02.10	71km	1st Mountains to Sea Greenway 1. Yanshui Estuary to Zengwen Reservoir	9:20:00 h	2 🥈
02.07	24h	IAU 24h Asia and Oceania Championships	156.480 km	25
12.03	100km	11th Southern Cross-Island Highway 100 km Ultra Marathon	9:27:12 h	4
13.02	100km	5th Fencihu 100 km Ultra Run	9:58:33 h	1 🏆
2021
26.11	100km	10th Yilan Dongshan River 100km Ultra-Marathon Night Run	9:12:53 h	1 🏆
07.11	46km	3rd Lavender Ultra Run	5:12:43 h	1 🏆
02–04.10	223km/2stages	4th 800 Heroes - Cross Taiwan Stage Race	29:24:17 h	2 🥈
02.10	115km	4th 800 Heroes - Cross Taiwan Stage 1 - Wuqi to Qingjing	15:12:28 h	2 🥈
02.10	108km	4th 800 Heroes - Cross Taiwan Stage 2 - Qingjing to Xincheng	14:11:49 h	2 🥈
18.04	100km	4th 800 Heroes - Overlord of Maoli 100km	11:21:44 h	4
10.04	125km	4th Legend of the Mountain 125 km Ultra Run	12:17:30 h	2 🥈
13.03	120km	10th Southern Cross-Island Highway 120 km Ultra Marathon	12:06:13 h	5
28.02	100km	4th Fencihu 100 km Ultra Run	9:43:31 h	1 🏆
30.01	100mi	10th Taipei 24hr Ultra Marathon - 100mi	17:39:45 h	5
30.01	100km	10th Taipei 24hr Ultra Marathon - 100km	9:55:52 h	4
30.01	12h	10th Taipei 24hr Ultra Marathon - 12h Split	116.688 km	5
30.01	24h	10th Taipei 24hr Ultra Marathon	205.233 km	6
24.01	53km	6th Jinshui Camp Trail 53km	6:39:08 h	5
2020
19.12	106km	3rd 800 Heroes - Territory Southward 106km	11:22:07 h	1 🏆
14.11	100km	3rd 800 Heroes - Leisurely Running in Yuli 100km	9:33:24 h	1 🏆
17.10	102km	3rd 800 Heroes - Overlord of KinMen 102km	11:20:33 h	1 🏆
19.09	105km	3rd 800 Heroes - Chungliao Mountain 105km	11:29:48 h	1 🏆
13.09	45km	3rd Pinli Ultra Run	4:24:28 h	4
15–23.08	410km/9stages	6th Around Guanshan Ultramarathon Stage Race	40:37:44 h	1 🏆
15.08	46km	6th Around Guanshan Ultramarathon Stage Race - Stage 1	4:51:01 h	1 🏆
16.08	45km	6th Around Guanshan Ultramarathon Stage Race - Stage 2	5:18:51 h	1 🏆
17.08	46km	6th Around Guanshan Ultramarathon Stage Race - Stage 3	4:19:24 h	1 🏆
18.08	46km	6th Around Guanshan Ultramarathon Stage Race - Stage 4	4:20:56 h	1 🏆
19.08	45km	6th Around Guanshan Ultramarathon Stage Race - Stage 5	3:59:22 h	1 🏆
20.08	46km	6th Around Guanshan Ultramarathon Stage Race - Stage 6	4:17:54 h	1 🏆
21.08	45km	6th Around Guanshan Ultramarathon Stage Race - Stage 7	4:31:34 h	1 🏆
22.08	45km	6th Around Guanshan Ultramarathon Stage Race - Stage 8	4:46:54 h	7
23.08	46km	6th Around Guanshan Ultramarathon Stage Race - Stage 9	4:11:48 h	1 🏆
26.07	45km	5th TUR Charity UltraMarathon	4:16:00 h	6
05.07	101km	3rd 800 Heroes - Overlord of Shuishalian 101 km	11:48:52 h	4
13.06	100km	3rd 800 Heroes - Overlord of LaoNong 100km	12:10:55 h	6
09.05	110km	3rd 800 Heroes - Overlord of ZengNan	12:53:56 h	3 🥉
25.04	100km	3rd 800 Heroes - Overlord of Maoli 100km	11:39:54 h	3 🥉
09.02	100km	3rd Fencihu 100 km Ultra Run	9:32:23 h	1 🏆
19.01	100km	8th Zhenxibao (Cinsbu) 100 km Ultramarathon	10:05:37 h	5
2019
08.12	100km	3rd Shancheng 100 km Ultramarathon	9:28:40 h	3 🥉
02.11	100km	5th Buddha's Palm 100km Ultramarathon	11:32:01 h	6
11.08	50.6km	1st Sanwan Pear Ultra Run	4:35:36 h	1 🏆
28.07	53km	1st Deep Feelings Ultra Run	4:29:12 h	1 🏆
14.07	45.8km	4th Lovers' Gorge Ultra Run	3:50:28 h	1 🏆
07.07	46.6km	4th Forest of Forget The Sorrow UltraMarathon	5:18:52 h	2 🥈
23.06	45km	2nd Pinli Ultra Run	4:44:39 h	9
16.06	45km	7th Ancient Temples Tours Ultra Run	4:34:47 h	2 🥈
09.06	100km	2nd Shudder Sheipa Ultramarathon - 100km	10:46:28 h	1 🏆
26.05	49.2km	1st Wenshui old street Ultra Run	4:52:56 h	5
14.04	50km	4th Tianxishui Ultra Run	5:20:15 h	33
31.03	102km	1st Kinyawpan Ultra Marathon - 102km	10:34:33 h	1 🏆
09.03	100km	9th Southern Cross-Island Highway 100 km Ultra Marathon	10:14:40 h	7
20.01	100km	7th Zhenxibao (Cinsbu) 100 km Ultramarathon	11:43:21 h	56
06.01	50km	3rd Roaming 139 Ultramarathon	6:40:33 h	26
2018
29.07	46.6km	3rd Forest of Forget The Sorrow UltraMarathon	6:04:44 h	7
22.07	46km	3rd Lovers' Gorge Ultra Run	4:51:32 h	7
29.04	100km	1st Fencihu 100 km Ultra Run	13:37:30 h	60
2017
10.12	45.8km	1st Chia Nan Group Marathon	5:39:43 h	444
08.10	102km	1st Tour de KinMen Ultra Marathon	13:17:50 h	34
23.07	45km	2nd Lovers' Gorge Ultra Run	4:32:52 h	17

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	15/8/2020	6th Around Guanshan Ultramarathon Stage Race	410,00	×6
✓ 2	2/10/2021	4th 800 Heroes - Cross Taiwan Stage Race	223,00	×3
✓ 3	30/1/2021	10th Taipei 24hr Ultra Marathon	205,23	×3
✓ 4	11/2/2023	12th Taipei 24hr Ultra Marathon	178,21	×2
✓ 5	12/11/2022	5th 800 Heroes - Overlord of Huatan 100mi	160,93	×2
✓ 6	2/7/2022	IAU 24h Asia and Oceania Championships	156,48	×2
✓ 7	1/12/2023	IAU 24h WC Taipei (Open)	154,00	×2
✓ 8	27/5/2023	2nd Hirosaki 24h Ultra Run	131,25	×1
✓ 9	10/4/2021	4th Legend of the Mountain 125 km Ultra Run	125,00	×1
✓ 10	13/3/2021	10th Southern Cross-Island Highway 120 km Ultra Marathon	120,00	×1
✓ 11	9/5/2020	3rd 800 Heroes - Overlord of ZengNan	110,00	×1
✓ 12	19/12/2020	3rd 800 Heroes - Territory Southward 106km	106,00	×1
✓ 13	19/9/2020	3rd 800 Heroes - Chungliao Mountain 105km	105,00	×1
✓ 14	8/2/2026	9th 800 Heroes - Territory Southward 104km	104,00	×1
✓ 15	17/10/2020	3rd 800 Heroes - Overlord of KinMen 102km	102,00	×1
✓ 16	31/3/2019	1st Kinyawpan Ultra Marathon - 102km	102,00	×1
✓ 17	8/10/2017	1st Tour de KinMen Ultra Marathon	102,00	×1
✓ 18	16/10/2022	5th 800 Heroes - Overlord of Shuishalian 101 km	101,00	×1
✓ 19	5/7/2020	3rd 800 Heroes - Overlord of Shuishalian 101 km	101,00	×1
✓ 20	15/12/2024	7th 800 Heroes - Overlord of KinMen 100km	100,50	×1
✓ 21	20/4/2025	35th Fuji 4 Lakes 100 km Challenge	100,00	×1
✓ 22	23/2/2025	8th Fencihu 100 km Ultra Run	100,00	×1
✓ 23	12/1/2025	11th Zhenxibao (Cinsbu) 100 km Ultramarathon	100,00	×1
✓ 24	22/11/2024	13th Yilan Dongshan River 100km Ultra-Marathon Night Run	100,00	×1
✓ 25	21/4/2024	34th Fuji 4 Lakes 100 km Challenge	100,00	×1
✓ 26	3/3/2024	7th Fencihu 100 km Ultra Run	100,00	×1
✓ 27	21/1/2024	10th Zhenxibao (Cinsbu) 100 km Ultramarathon	100,00	×1
✓ 28	24/12/2023	6th Shancheng 100 km Ultramarathon	100,00	×1
✓ 29	4/11/2023	9th Buddha's Palm 100km Ultramarathon	100,00	×1
✓ 30	17/9/2023	1st Huashan 100 KM	100,00	×1
✓ 31	30/7/2023	IAU 100 km Asia and Oceania Championships	100,00	×1
✓ 32	26/2/2023	6th Fencihu 100 km Ultra Run	100,00	×1
✓ 33	8/1/2023	9th Zhenxibao (Cinsbu) 100 km Ultramarathon	100,00	×1
✓ 34	1/1/2023	6th 800 Heroes - Overlord of Taizhong 100km	100,00	×1
✓ 35	25/12/2022	5th Shancheng 100 km Ultramarathon	100,00	×1
✓ 36	12/3/2022	11th Southern Cross-Island Highway 100 km Ultra Marathon	100,00	×1
✓ 37	13/2/2022	5th Fencihu 100 km Ultra Run	100,00	×1
✓ 38	26/11/2021	10th Yilan Dongshan River 100km Ultra-Marathon Night Run	100,00	×1
✓ 39	18/4/2021	4th 800 Heroes - Overlord of Maoli 100km	100,00	×1
✓ 40	28/2/2021	4th Fencihu 100 km Ultra Run	100,00	×1
✓ 41	14/11/2020	3rd 800 Heroes - Leisurely Running in Yuli 100km	100,00	×1
✓ 42	13/6/2020	3rd 800 Heroes - Overlord of LaoNong 100km	100,00	×1
✓ 43	25/4/2020	3rd 800 Heroes - Overlord of Maoli 100km	100,00	×1
✓ 44	9/2/2020	3rd Fencihu 100 km Ultra Run	100,00	×1
✓ 45	19/1/2020	8th Zhenxibao (Cinsbu) 100 km Ultramarathon	100,00	×1
✓ 46	8/12/2019	3rd Shancheng 100 km Ultramarathon	100,00	×1
✓ 47	2/11/2019	5th Buddha's Palm 100km Ultramarathon	100,00	×1
✓ 48	9/6/2019	2nd Shudder Sheipa Ultramarathon - 100km	100,00	×1
✓ 49	9/3/2019	9th Southern Cross-Island Highway 100 km Ultra Marathon	100,00	×1
✓ 50	20/1/2019	7th Zhenxibao (Cinsbu) 100 km Ultramarathon	100,00	×1
✓ 51	29/4/2018	1st Fencihu 100 km Ultra Run	100,00	×1
✓ 52	28/9/2025	1st Luzhu Ultra Marathon - 14h	84,40	×1
✓ 53	2/10/2022	1st Mountains to Sea Greenway 1. Yanshui Estuary to Zengwen Reservoir	71,00	×1
✓ 54	13/5/2023	8th National Taipei University 12H Ultra Marathon	59,65	—
✓ 55	3/10/2022	1st Mountains to Sea Greenway 2. Zengwen Reservoir to Danayigu	58,00	—
56	24/1/2021	6th Jinshui Camp Trail 53km	53,00	—
57	28/7/2019	1st Deep Feelings Ultra Run	53,00	—
58	11/8/2019	1st Sanwan Pear Ultra Run	50,60	—
59	1/3/2026	9th Fencihu 50 km Ultra Run	50,00	—
60	14/4/2019	4th Tianxishui Ultra Run	50,00	—
61	6/1/2019	3rd Roaming 139 Ultramarathon	50,00	—
62	26/5/2019	1st Wenshui old street Ultra Run	49,20	—
63	4/10/2022	1st Mountains to Sea Greenway 3. Danayigu to Alishan	49,00	—
64	7/7/2019	4th Forest of Forget The Sorrow UltraMarathon	46,60	—
65	29/7/2018	3rd Forest of Forget The Sorrow UltraMarathon	46,60	—
66	7/11/2021	3rd Lavender Ultra Run	46,00	—
67	22/7/2018	3rd Lovers' Gorge Ultra Run	46,00	—
68	14/7/2019	4th Lovers' Gorge Ultra Run	45,80	—
69	10/12/2017	1st Chia Nan Group Marathon	45,80	—
70	2/8/2025	1st Shuangxi to Wushi Ultra Run	45,00	—
71	23/10/2022	7th TUR Charity UltraMarathon	45,00	—
72	13/9/2020	3rd Pinli Ultra Run	45,00	—
73	26/7/2020	5th TUR Charity UltraMarathon	45,00	—
74	23/6/2019	2nd Pinli Ultra Run	45,00	—
75	16/6/2019	7th Ancient Temples Tours Ultra Run	45,00	—
76	23/7/2017	2nd Lovers' Gorge Ultra Run	45,00	—