I-Kai (曹以開) Tsao
Born : 1963 Cat. M60 Ultrarunner since 2010 TPE
60
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
61
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
2
Countries visited ?JPNJapanTPETaiwan
56,7%
Rank quotient ?This runner's calculation uses 141 eligible race(s): Σ(rank − 1) = 12 830; Σ finishers = 22 641. 12 830 / 22 641 × 100 = 56.67%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed155
Km — ultra races10 308 km
> 100 km23
> 160 km1
> 200 km1
Longest race233,0 km

Km per year (ultra races)

1 008
10 races
2022
705
8 races
2023
252
3 races
2024
273
4 races
2025
55
1 race
2026

Race types (share of distance)

Road84,7%
Trail5,9%
Stage9,4%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 31
🏅 Top 3 M1
Longest winning streak0
Current streak0

HISTORY

148 race(s) · 6 stage(s) nested · 2 split(s) nested
DateRacePerf.Rk
2026
15.03 54.8km TPE9th 800 Heroes - Sandiaojiao Lighthouse 55km 8:41:24 h22
2025
02.11 52.3km TPE8th 800 Heroes - Overlord of Windy City 52km 7:30:34 h25
19.10 50km TPE8th 800 Heroes - Overlord of Shuishalian 50km 7:42:30 h23
16.02 71km TPE8th 800 Heroes - Chungliao Mountain 71km 10:24:07 h33
05.01 100km TPE8th 800 Heroes - Overlord of Baguashan 100km 15:08:19 h46
2024
22.12 100km TPE7th Shancheng 100 km Ultramarathon 13:20:55 h167
06.10 52.3km TPE7th 800 Heroes - Overlord of Windy City 52km 7:53:50 h41
21.09 100km TPE1st Yizai Jincheng 100km 14:00:35 h73
2023
19.11 101.1km TPE6th 800 Heroes - Overlord of Windy City 101km 15:27:39 h76
15.10 49km TPE6th 800 Heroes - Overlord of Shuishalian 49km 8:11:30 h27
17.09 100km TPE1st Huashan 100 KM 14:48:12 h160
27.05 50km TPE4th Mei Shan 36 Curves 6:54:36 h26
21.05 101.3km TPE6th 800 Heroes - Overlord of Shimen 100km 15:26:51 h77
09.04 104km TPE6th 800 Heroes - Overlord of Hulien 100km 15:28:44 h93
08.01 100km TPE9th Zhenxibao (Cinsbu) 100 km Ultramarathon I 13:39:56 h5
01.01 100km TPE6th 800 Heroes - Overlord of Taizhong 100km 14:07:00 h40
2022
25.12 100km TPE5th Shancheng 100 km Ultramarathon 13:18:25 h229
17.12 106km TPE5th 800 Heroes - Jinshui Camp Trail 106km 16:48:31 h20
05.11 100km TPE8th Buddha's Palm 100km Ultramarathon 14:08:29 h84
23.10 45km TPE7th TUR Charity UltraMarathon 5:46:55 h64
16.10 101km TPE5th 800 Heroes - Overlord of Shuishalian 101 km 15:08:26 h29
18.09 100km TPE4th Shudder Sheipa Ultramarathon - 100km 13:30:41 h52
07.08 45km TPE8th Around Guanshan Ultramarathon Stage Race - Stage 2 6:39:28 h17
06.08 47km TPE8th Around Guanshan Ultramarathon Stage Race - Stage 1 5:52:25 h8
21.05 50km TPE3rd Mei Shan 36 Curves 6:09:10 h15
19.03 114km TPE5th 800 Heroes - Overlord of Surround PengHu 114km 15:29:39 h46
12.03 100km TPE11th Southern Cross-Island Highway 100 km Ultra Marathon 12:33:34 h89
13.02 100km TPE5th 800 Heroes - Overlord of Aowanda 100km 15:11:34 h16
2021
05.12 101km TPE4th 800 Heroes - Overlord of Shuishalian 101 km 14:43:03 h29
07.11 46km TPE3rd Lavender Ultra Run 5:37:59 h10
01.05 50km TPE2nd Mei Shan 36 Curves 6:22:14 h32
18.04 100km TPE4th 800 Heroes - Overlord of Maoli 100km 14:22:56 h50
10.04 125km TPE4th Legend of the Mountain 125 km Ultra Run 17:15:00 h36
13.03 100km TPE10th Southern Cross-Island Highway 100 km Ultra Marathon 13:02:32 h234
28.02 100km TPE4th Fencihu 100 km Ultra Run 13:44:28 h136
07.02 46km TPE4th Dasyueshan Ultra Run 7:32:51 h24
24.01 53km TPE6th Jinshui Camp Trail 53km 9:03:00 h92
01.01 46km TPE4th Flaming Mountain Ultra Run 6:35:28 h6
2020
19.12 106km TPE3rd 800 Heroes - Territory Southward 106km 15:19:36 h81
13.12 100km TPE7th Dakeng Ultra Run - 100 km 13:53:38 h12
14.11 100km TPE3rd 800 Heroes - Leisurely Running in Yuli 100km 13:15:05 h69
07.11 100km TPE6th Buddha's Palm 100km Ultramarathon 14:39:39 h83
25.10 104km TPE3rd Dongfong Ultra Marathon - 104 km 13:58:24 h10
17.10 102km TPE3rd 800 Heroes - Overlord of KinMen 102km 14:48:13 h95
27.09 104km TPE2nd Tanya Shen Ultra Marathon - 104km 13:03:41 h11
23.08 46.6km TPE5th Forest of Forget The Sorrow UltraMarathon 6:42:51 h49
09.08 45.3km TPE5th Run to Malabon UltraMarathon 7:58:32 h47
02.08 48.1km TPE10th Ancient Temples Tours Ultra Run 6:12:18 h10
26.07 45km TPE5th TUR Charity UltraMarathon 6:22:00 h96
05.07 101km TPE3rd 800 Heroes - Overlord of Shuishalian 101 km 15:45:10 h50
13.06 100km TPE3rd 800 Heroes - Overlord of LaoNong 100km 15:04:22 h44
31.05 45km TPE9th Ancient Temples Tours Ultra Run 6:20:54 h42
16.05 50km TPE1st Mei Shan 36 Curves 6:58:28 h45
09.05 110km TPE3rd 800 Heroes - Overlord of ZengNan 16:53:53 h64
19.04 49.2km TPE5th Yi Tong Go Trail Running UltraMarathon 9:43:27 h78
12.04 45km TPE5th Mountain Majestic Lake Beautiful Ultra Run 9:46:39 h49
09.02 100km TPE3rd Fencihu 100 km Ultra Run 13:06:28 h78
19.01 100km TPE8th Zhenxibao (Cinsbu) 100 km Ultramarathon 13:45:54 h251
2019
14.12 106km TPE2nd 800 Heroes - Territory Southward 106km 14:54:50 h44
08.12 100km TPE3rd Shancheng 100 km Ultramarathon 12:47:33 h166
20.10 61km TPE1st Fondle admiringly Ultra Run 8:04:10 h5
28.09 113km TPE2nd 800 Heroes - Overlord of Surround PengHu 113km 15:28:40 h48
17.08 104km TPE2nd 800 Heroes - Leisurely Running in Yuli 16:24:41 h36
04.08 46.4km TPE4th Run to Malabon UltraMarathon 7:57:31 h33
14.07 45.8km TPE4th Lovers' Gorge Ultra Run 6:03:07 h147
07.07 46.6km TPE4th Forest of Forget The Sorrow UltraMarathon 6:49:59 h43
09.06 100km TPE2nd Shudder Sheipa Ultramarathon - 100km 13:58:23 h25
11.05 103km TPE2nd 800 Heroes - Leisurely Running in Alishan 103km 16:00:02 h38
14.04 45km TPE4th Mountain Majestic Lake Beautiful Ultra Run 9:54:13 h62
17.03 100km TPE2nd Fencihu 100 km Ultra Run 13:47:57 h64
20.01 53km TPE1st 800 Heroes - Jinshui Camp Trail 53km 7:56:37 h19
05.01 45km TPE4th TUR Charity UltraMarathon 6:19:49 h71
2018
29.12 45km TPE4th Jiji Mountains Ultra Run 6:16:21 h57
15.12 105km TPE1st 800 Heroes - Territory Southward 15:15:59 h90
11.11 45km TPE4th Meinong Ultramarathon 5:48:29 h67
06.10 104km TPE1st 800 Heroes - Leisurely Running in Yuli 14:53:33 h47
29.07 46.6km TPE3rd Forest of Forget The Sorrow UltraMarathon 7:29:04 h46
21.07 101km TPE1st 800 Heroes - Leisurely Running in Alishan 15:54:01 h69
08.07 46.4km TPE3rd Run to Malabon UltraMarathon 8:17:36 h23
30.06 56km TPE2nd Dongfong Ultra Marathon - 56 km 7:05:47 h66
20.05 52km TPE3rd Yi Tong Go Trail Running UltraMarathon 11:22:50 h30
06.05 50km TPE1st Paofeng 500 Ultramarathon 8:51:11 h94
21.04 78km TPE1st Namasia Ultra Run 11:55:00 h27
06.01 45km TPE3rd TUR Charity UltraMarathon 6:12:57 h49
2017
23.12 45km TPE3rd Jiji Mountains Ultra Run 6:53:26 h69
03.09 48.5km TPERui Tai Camp Trail 8:09:55 h14
16.07 47km TPE2nd Forest of Forget The Sorrow UltraMarathon 8:49:36 h118
21.05 46km TPE2nd Yi Tong Go Trail Running UltraMarathon 9:50:12 h50
20.05 50km TPE4th Dakeng Ultra Run - 50 km 6:27:35 h77
22.04 49.4km TPEFengshan Ultramarathon 7:37:56 h31
16.04 45km TPE2nd Mountain Majestic Lake Beautiful Ultra Run 10:32:48 h29
09.04 45.3km TPE2nd Kaohaiung Love Public Ultramarathon 6:04:18 h199
25.03 100km TPE1st Overlord of WhiNe UltraMarathon 14:14:56 h48
11.03 60km TPE7th Southern Cross-Island Highway 60 km Ultra Marathon 7:51:22 h139
04.03 46.6km TPE2nd Grapefruit scent Ultramarathon 6:14:19 h152
19.02 45km TPE3rd Zhongliao Mountain Ultramarathon 7:13:18 h49
2016
23.10 45km TPETwo Buddha to Tour Ultramarathon 7:01:02 h39
30.07 45km TPE1st Lovers' Gorge Ultra Run 5:55:23 h100
23.07 46.5km TPE1st Tianxishui Ultra Run 5:46:24 h73
03.07 46.6km TPE1st 175 Coffee Road Ultramarathon 8:13:33 h60
29.05 50km TPE1st soar 136 Ultramarathon 8:44:10 h119
18.04 233km/5stages JPN1st Hida Takayama Ultra Run Stage Race 39:15:36 h3 🥉
12.03 60km TPE6th Southern Cross-Island Highway 60 km Ultra Marathon 7:21:07 h121
06.03 47.3km TPE2nd Zhongliao Mountain Ultramarathon 6:53:46 h173
14.02 46km TPE1st Kaohsiung fill in Love with Mountain Sea Ultramarathon 8:49:31 h48
13.02 45.6km TPE1st Mountain sea lover Ultramarathon 7:15:00 h256
08.02 45km TPE1st The joy Kung temple Ultramarathon 6:49:42 h41
10.01 12h TPE1st National University of Kaohsiung 12h 80.500 km34
2015
26.12 50km TPE1st Moon Stroll Ultramarathon 7:28:18 h55
19.12 45.3km TPE1st Zhuxiang style Ultra Run 5:53:04 h64
28.11 52km TPE1st Meinong Ultramarathon 7:19:34 h28
31.10 56km TPE1st Chitan Sunset Ultra Run 8:27:18 h13
17.10 47.8km TPE1st Saichia Ultramarathon 7:08:30 h11
09.10 48km TPE1st Jhushan Ultramarathon 6:37:33 h543
12–13.09 90.8km/2stages TPE1st Juili 90.8 Ultramarathon Stage Race 13:51:38 h12
05.09 46.3km TPE1st Dawushan Ultramarathon 8:57:55 h42
30.08 45km TPE1st Conquer Loma Ultra Run 7:12:31 h24
01.08 45km TPE1st Dasyueshan Ultramarathon 6:50:50 h70
19.07 46.5km TPE1st Liouguei Ultramarathon 10:23:52 h36
21.06 45km TPE1st Zhongliao Mountain Ultramarathon 7:27:00 h158
14.06 50km TPE1st Dahu Ultramarathon 7:36:37 h19
06–07.06 92km/2stages TPE1st Mona Rudo Ultramarathon 14:36:10 h25
30.05 46.7km TPE1st Jiaosi to Chilan Ultramarathon 7:04:00 h13
24.05 45km TPE1st Moonforest Ultra Run 7:07:30 h28
23.05 50km TPE1st DaKeng Ultra Run - 50 km 7:11:00 h32
03.05 56km TPE1st Thanksgiving Ultramarathon 8:31:00 h27
18.04 45km TPE1st Huludun Ultramarathon 6:53:50 h50
06.04 55km TPE1st Talu Ultramarathon Stage Race - Stage 2 (Wufeng - Talu) 9:04:00 h24
28.03 62.2km TPE1st Trans-Taiwan 2 Stages Ultramarathon Stage 1 (Fukueichiao - Guanyin) 9:25:09 h12
2014
08.11 50km TPE1st Puyenting Ultramarathon 8:09:20 h32
09–10.08 122km/2stages TPE1st Shanhailian Ultramarathon 18:37:25 h49
23.06 48km TPERun Taiwan - Stage 3 Dounan to Xinying 8:31:49 h12
26.04 70.7km TPE1st Jiumei Ultramarathon 10:08:44 h120
06.04 45.6km TPE1st Mingde Reservoir Ultramarathon 6:25:10 h561
26.01 6h TPE1st Yizai Jincheng 6h Ultramarathon 45.646 km266
2013
02.11 45km TPE2nd Datun Mountain Ultra Marathon 6:10:17 h302
05.10 12h TPE1st Kaohsiung 12h Track UltraMarathon 73.512 km122
03.08 72km TPE1st Shichong Creek Summer Ultramarathon 10:26:19 h350
05.04 93km TPE1st Tour de Taiwan Island 3 Stages Ultramarathon - Stage 2 (Jinlun to Manzhou) 14:53:57 h9
04.04 85km TPE1st Tour de Taiwan Island 3 Stages Ultramarathon - Stage 1 (Chishang to Jinlun) 12:25:21 h13
16.03 100km TPE3rd Southern Cross-Island Highway 100 km Ultra Marathon 12:57:32 h135
10.02 46.9km TPE6th Tainan Branch Friendship Cup Chinese New Year Marathon 5:37:50 h181
2012
09.09 50km TPE2nd Flex Power National 50K Track Taichung 5:55:53 h199
26.02 50km TPEHua-shan 50K Ultra Marathon 5:55:48 h509
2011
27.03 12h TPE1st National Taipei University 12h Ultra Marathon 72.000 km285
15.01 100km TPE3rd Praying for Taiwan - 100K Ultramarathon 13:25:34 h318
2010
17.10 45.6km TPEHengchun Airport ultra marathon 5:49:49 h786
01.08 50km TPE3rd Kaohsiung Summer 50km Ultramarathon 7:41:08 h507