Kuo-Yuan (賴國源) Lai
Born : 1969 Cat. M55 Ultrarunner since 2012 TPE
100
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
3
Countries visited ?CHNChinaJPNJapanTPETaiwan
45,4%
Rank quotient ?This runner's calculation uses 173 eligible race(s): Σ(rank − 1) = 17 232; Σ finishers = 37 992. 17 232 / 37 992 × 100 = 45.36%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed178
Km — ultra races15 221 km
> 100 km43
> 160 km2
> 200 km1
Longest race223,0 km

Km per year (ultra races)

1 136
7 races
2022
1 355
14 races
2023
857
9 races
2024
637
7 races
2025
400
4 races
2026

Race types (share of distance)

Road93,0%
Trail3,5%
Stage3,5%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 30
🏅 Top 3 M2
Longest winning streak0
Current streak0

HISTORY

178 race(s)
DateRacePerf.Rk
2026
19.04 100km JPN36th Fuji 4 Lakes 100 km Challenge 13:21:58 h982
11.04 100km TPE2nd Xuhai Ultra Marathon 15:02:59 h99
14.03 100km TPE15th Southern Cross-Island Highway 100 km Ultra Marathon 12:19:44 h65
01.03 100km TPE9th Fencihu 100 km Ultra Run 14:18:21 h122
2025
19.10 100km JPN31th River Shimanto 100km 12:52:22 h569
28.09 14h TPE1st Luzhu Ultra Marathon - 14h 80.180 km77
20.09 100km TPE2nd Yizai Jincheng 100km 14:28:06 h38
20.04 100km JPN35th Fuji 4 Lakes 100 km Challenge 12:56:57 h879
23.02 100km TPE8th Fencihu 100 km Ultra Run 14:07:07 h122
12.01 100km TPE11th Zhenxibao (Cinsbu) 100 km Ultramarathon 13:59:57 h177
05.01 56.4km TPE8th 800 Heroes - Overlord of Baguashan 60km 8:00:49 h29
2024
22.12 100km TPE7th Shancheng 100 km Ultramarathon 13:10:38 h154
23.11 100km TPE13h Yilan Dongshan River 100km Ultra-Marathon 13:33:50 h58
20.10 100km JPN30th River Shimanto 100km 12:43:36 h636
06.10 52.3km TPE7th 800 Heroes - Overlord of Windy City 52km 7:40:31 h37
21.09 100km TPE1st Yizai Jincheng 100km 13:38:04 h54
21.04 100km JPN34th Fuji 4 Lakes 100 km Challenge 13:00:36 h831
03.03 100km TPE7th Fencihu 100 km Ultra Run 13:53:33 h115
04.02 105km TPE7th 800 Heroes - Chungliao Mountain 105km 14:39:22 h17
21.01 100km TPE10th Zhenxibao (Cinsbu) 100 km Ultramarathon 14:14:04 h283
2023
31.12 100km TPE7th 800 Heroes - Overlord of Taizhong 100km 14:05:50 h17
24.12 100km TPE6th Shancheng 100 km Ultramarathon 12:36:19 h120
19.11 101.1km TPE6th 800 Heroes - Overlord of Windy City 101km 14:38:07 h58
11.11 50km TPE2nd Fengyuan 50km Track 5:39:24 h51
21.10 100km TPE12h Yilan Dongshan River 100km Ultra-Marathon 11:26:13 h19
15.10 101.7km TPE6th 800 Heroes - Overlord of Shuishalian 101km 14:56:59 h33
24.09 100km JPN31. Akita Nairiku 100km Marathon 11:51:21 h198
17.09 100km TPE1st Huashan 100 KM 13:58:41 h110
21.05 101.3km TPE6th 800 Heroes - Overlord of Shimen 100km 15:22:34 h76
16.04 100km JPN33th Fuji 4 Lakes 100 km Challenge 12:28:01 h467
26.02 100km TPE6th Fencihu 100 km Ultra Run 12:50:38 h71
05.02 100.7km TPE6th 800 Heroes - Overlord of Aowanda 100km 15:33:50 h46
08.01 100km TPE9th Zhenxibao (Cinsbu) 100 km Ultramarathon 13:29:55 h212
01.01 100km TPE6th 800 Heroes - Overlord of Taizhong 100km 14:11:55 h42
2022
25.12 100km TPE5th Shancheng 100 km Ultramarathon 12:20:48 h144
16.10 101km TPE5th 800 Heroes - Overlord of Shuishalian 101 km 15:16:13 h36
18.09 100km TPE4th Shudder Sheipa Ultramarathon - 100km 13:52:17 h67
10.04 100km TPE5th 800 Heroes - Overlord of Maoli 100km 15:54:34 h18
19.03 114km TPE5th 800 Heroes - Overlord of Surround PengHu 114km 15:18:29 h39
12.03 100km TPE11th Southern Cross-Island Highway 100 km Ultra Marathon 13:48:40 h163
27.02 104km TPE1st Tour de Taiwan TUR 100 Stage 9 - Chiayi to Zuoying 15:39:47 h7
26.02 100km TPE1st Tour de Taiwan TUR 100 Stage 8 - Taichung to Chiayi 14:35:51 h3 🥉
20.02 104km TPE1st Tour de Taiwan TUR 100 Stage 2 - Daren to Guanshan 16:00:00 h18
19.02 113km TPE1st Tour de Taiwan TUR 100 Stage 1 - Zuoying to Daren 14:56:35 h13
13.02 100km TPE5th Fencihu 100 km Ultra Run 13:09:42 h62
2021
05.12 101km TPE4th 800 Heroes - Overlord of Shuishalian 101 km 15:09:12 h49
02.10 115km TPE4th 800 Heroes - Cross Taiwan Stage 1 - Wuqi to Qingjing 16:49:25 h17
01.05 136km TPE1st Colorful Lake 36 36:38:04 h11
18.04 100km TPE4th 800 Heroes - Overlord of Maoli 100km 14:03:06 h41
13.03 100km TPE10th Southern Cross-Island Highway 100 km Ultra Marathon 12:11:52 h130
28.02 100km TPE4th Fencihu 100 km Ultra Run 13:29:35 h113
2020
19.12 106km TPE3rd 800 Heroes - Territory Southward 106km 14:12:21 h43
13.12 100km TPE7th Dakeng Ultra Run - 100 km 13:46:24 h11
14.11 100km TPE3rd 800 Heroes - Leisurely Running in Yuli 100km 13:17:35 h71
25.10 104km TPE3rd Dongfong Ultra Marathon - 104 km 14:12:45 h13
17.10 102km TPE3rd 800 Heroes - Overlord of KinMen 102km 13:52:07 h53
27.09 104km TPE2nd Tanya Shen Ultra Marathon - 104km 13:49:14 h17
19.09 105km TPE3rd 800 Heroes - Chungliao Mountain 105km 14:58:27 h20
23.08 46.6km TPE5th Forest of Forget The Sorrow UltraMarathon 6:48:11 h54
09.08 45.3km TPE5th Run to Malabon UltraMarathon 7:27:10 h33
02.08 48.1km TPE10th Ancient Temples Tours Ultra Run 6:20:10 h12
05.07 101km TPE3rd 800 Heroes - Overlord of Shuishalian 101 km 15:47:31 h54
13.06 100km TPE3rd 800 Heroes - Overlord of LaoNong 100km 14:41:46 h37
09.05 110km TPE3rd 800 Heroes - Overlord of ZengNan 15:59:45 h32
25.04 100km TPE3rd 800 Heroes - Overlord of Maoli 100km 15:13:34 h46
19.04 49.2km TPE5th Yi Tong Go Trail Running UltraMarathon 8:40:45 h41
12.04 45km TPE5th Mountain Majestic Lake Beautiful Ultra Run 9:37:10 h42
09.02 100km TPE3rd Fencihu 100 km Ultra Run 13:05:07 h75
19.01 100km TPE8th Zhenxibao (Cinsbu) 100 km Ultramarathon 13:24:26 h185
05.01 100km TPE2nd National University of Kaohsiung 100km 11:56:28 h42
2019
28.12 50km TPE6th Dakeng Ultra Run - 50 km 5:37:41 h29
14.12 106km TPE2nd 800 Heroes - Territory Southward 106km 14:18:35 h30
08.12 100km TPE3rd Shancheng 100 km Ultramarathon 12:13:15 h116
16.11 119km TPE2nd 800 Heroes - Overlord of ZengWen Reservoir 16:36:46 h28
02.11 100km TPE5th Buddha's Palm 100km Ultramarathon 14:56:45 h78
28.09 113km TPE2nd 800 Heroes - Overlord of Surround PengHu 113km 15:46:30 h62
15.09 100km TPE1st Tour de Baguoshan - Midnight start 14:48:00 h14
17.08 104km TPE2nd 800 Heroes - Leisurely Running in Yuli 15:41:20 h26
04.08 46.4km TPE4th Run to Malabon UltraMarathon 7:58:34 h34
14.07 45.8km TPE4th Lovers' Gorge Ultra Run 7:48:16 h415
07.07 46.6km TPE4th Forest of Forget The Sorrow UltraMarathon 6:51:26 h44
23.06 45km TPE2nd Pinli Ultra Run 5:45:03 h48
15.06 101km TPE2nd 800 Heroes - Chungliao Mountain 101km 15:09:05 h26
09.06 100km TPE2nd Shudder Sheipa Ultramarathon - 100km 13:44:40 h22
11.05 103km TPE2nd 800 Heroes - Leisurely Running in Alishan 103km 15:25:14 h22
31.03 102km TPE1st Kinyawpan Ultra Marathon - 102km 13:35:59 h48
17.03 100km TPE2nd Fencihu 100 km Ultra Run 13:37:51 h52
09.03 100km TPE9th Southern Cross-Island Highway 100 km Ultra Marathon 12:49:09 h76
02.03 100km TPE2nd Taiwania 100 Ultra Trail 13:58:19 h133
20.01 106km TPE1st 800 Heroes - Jinshui Camp Trail 106km 17:05:47 h28
06.01 100km TPE1st National University of Kaohsiung 100km 12:13:41 h32
2018
15.12 105km TPE1st 800 Heroes - Territory Southward 13:35:07 h29
09.12 100km TPE2nd Shancheng 100 km Ultramarathon 13:16:11 h92
01.12 100km TPE5th Dakeng Ultra Run - 100 km 14:04:20 h25
17.11 119km TPE1st 800 Heroes - Overlord of ZengWen Reservoir 16:36:19 h51
03.11 100km TPE4th Buddha's Palm 100km Ultramarathon 14:27:41 h38
20.10 103km TPE1st 800 Heroes - Run Across Taiwan 103km 14:54:56 h5
06.10 104km TPE1st 800 Heroes - Leisurely Running in Yuli 12:49:56 h14
01.09 104km TPE1st Tanya Shen Ultra Marathon - 104km 13:37:56 h16
05.08 47.5km TPE6th Ancient Temples Tours Ultra Run 6:00:15 h10
29.07 46.6km TPE3rd Forest of Forget The Sorrow UltraMarathon 8:10:30 h92
21.07 101km TPE1st 800 Heroes - Leisurely Running in Alishan 15:25:50 h47
08.07 46.4km TPE3rd Run to Malabon UltraMarathon 7:52:55 h13
30.06 104km TPE2nd Dongfong Ultra Marathon - 104 km 13:39:15 h30
16.06 117km TPE1st 800 Heroes - Tour de Little Taiwan 117 km 15:51:21 h9
12.05 105km TPE1st 800 Heroes - Chungliao Mountain 105km 15:00:23 h39
06.05 50km TPE1st Paofeng 500 Ultramarathon 6:52:00 h16
29.04 100km TPE1st Fencihu 100 km Ultra Run 14:08:45 h84
17.03 100km TPE8th Southern Cross-Island Highway 100 km Ultra Marathon 12:27:59 h129
21.01 100km TPE6th Zhenxibao (Cinsbu) 100 km Ultramarathon 12:54:22 h174
07.01 47km TPE2nd Roaming 139 Ultramarathon 5:53:11 h41
2017
24.12 45.6km TPE2nd Visit Forest of Gary Ultramarathon 9:36:12 h16
16.12 100km TPE2nd Overlord of WhiNe UltraMarathon 13:44:41 h41
04.11 119km TPE1st Overlord of ZengWen Reservoir UltraMarathon 16:54:54 h38
28.10 223km TPE1st Run Across Taiwan 223km 38:06:37 h6
08.10 102km TPE1st Tour de KinMen Ultra Marathon 13:21:30 h37
23.07 45km TPE2nd Lovers' Gorge Ultra Run 5:13:55 h72
16.07 47km TPE2nd Forest of Forget The Sorrow UltraMarathon 7:30:21 h30
25.06 100km JPN32. Lake Saroma 100 km Ultramarathon 12:43:55 h1860
21.05 46km TPE2nd Yi Tong Go Trail Running UltraMarathon 9:10:49 h28
20.05 50km TPE4th Dakeng Ultra Run - 50 km 5:57:05 h44
01.04 165km TPE3rd Race Across Taiwan Nonstop 165km 26:58:32 h6
19.03 12h TPE6th National Taipei University 12H Ultra Marathon 65.362 km309
11.03 120km TPE7th Southern Cross-Island Highway 120 km Ultra Marathon 14:26:18 h52
08.01 100km TPE5th Zhenxibao (Cinsbu) 100 km Ultramarathon 12:06:46 h83
2016
31.12 110km TPE2nd Hualein international 110 km Ultramarathon 14:27:18 h28
18.12 12h TPE2nd National University of Kaohsiung 12h 95.850 km33
25.11 100km TPE5th Yilan Dongshan River 100km Ultra-Marathon Night Run 13:10:12 h22
20.11 100km TPE2nd Chuoshui River 100 km Ultramarathon 13:37:00 h65
29.10 45.5km TPE1st Lion's Head Mountain Ultra Run 6:35:25 h4
08.10 45km TPE2nd Meinong Ultramarathon 5:15:31 h54
24.09 45km TPE1st Maruta Fort Ultra Run 6:45:51 h9
11.09 100km JPN4th 100 km Ultramarathon Hakusan-Shirakawago 13:16:13 h291
04.09 46km TPE1st Wangyekeng Ultra Run 6:05:16 h4
27.08 46km TPE1st Matai Meihua Ultra Run 6:35:50 h9
14.08 45km TPE1st Ancient Temples Tours Ultra Run 6:03:25 h12
07.08 45.7km TPE1st Luoshan North Ultra Run 6:10:28 h10
30.07 45km TPE1st Lovers' Gorge Ultra Run 5:07:16 h33
23.07 46km TPE1st Chupei to Yangmei Ultra Run 6:21:23 h17
16.07 47km TPE1st American Beauty Ultra Run 6:25:09 h11
10.07 45km TPE2nd Jiji Mountains Ultra Run 6:33:12 h18
03.07 45km TPE2nd Ptlaman Ultra Run 5:51:24 h8
25.06 46.5km TPE1st Shiguanyin Temple Ultra Run 6:42:18 h5
19.06 69km TPE2nd Kuanwu Ultramarathon 10:00:51 h20
12.06 100km JPN12th Iwate Ginga 100km Marathon Challenge 12:39:52 h483
05.06 48.5km TPE1st Westward Forester Ultra Run 7:04:49 h15
29.05 50km TPE1st soar 136 Ultramarathon 6:49:19 h22
21.05 45km TPE1st Gongguan to Taian Ultra Run 5:43:00 h5
07.05 45km TPE1st Yi Tong Go Trail Running UltraMarathon 8:22:51 h25
23.04 50km TPE3rd DaKeng Ultra Run - 50 km 6:26:03 h22
09.04 100km TPE1st Run Around Penghu 100 km Run 13:02:13 h14
02.04 106km TPE2nd Race Across Taiwan Nonstop 106km 15:22:35 h6
20.03 12h TPE5th National Taipei University 12H Ultra Marathon 92.101 km107
12.03 120km TPE6th Southern Cross-Island Highway 120 km Ultra Marathon 14:38:39 h72
21.02 110km TPE1st Blue Whale Ultramarathon 110 km 14:37:03 h66
08.02 45km TPE1st The joy Kung temple Ultramarathon 6:19:18 h23
24.01 75km TPE4th Zhenxibao (Cinsbu) 75 km Ultramarathon 9:22:30 h52
01.01 45.6km TPE1st Tongluo to Xiangshan Ultra Run 5:42:39 h12
2015
28.11 52km TPE1st Meinong Ultramarathon 6:25:09 h12
01.11 100km TPE1st Chuoshui River 100 km Ultramarathon 12:43:37 h63
09.10 48km TPE1st Jhushan Ultramarathon 5:50:13 h261
01.08 45km TPE1st Dasyueshan Ultramarathon 5:51:42 h25
25.04 50km CHN1st Shangri-La Meili 50 km 9:10:49 h7
07.03 108km TPE5th Southern Cross-Island Highway 108 km Ultra Marathon 12:48:06 h53
19.02 50km TPE8th Tainan Branch Friendship Cup Chinese New Year Marathon 5:25:04 h119
25.01 100km TPE3rd Zhenxibao (Cinsbu) 100 km Ultramarathon 11:40:35 h73
2014
10.10 50km TPE4th Flex Power National 50K Track Taipei 5:24:38 h77
26.04 70.7km TPE1st Jiumei Ultramarathon 9:36:23 h76
06.04 45.6km TPE1st Mingde Reservoir Ultramarathon 4:55:32 h212
23.02 100km TPE2nd Zhenxibao (Cinsbu) 100 km Ultramarathon 13:23:21 h129
31.01 54km TPE7th Tainan Branch Friendship Cup Chinese New Year Marathon 6:25:53 h239
2013
22.12 58km TPE1st Shei-Pa ultramarathon 6:44:30 h132
25.08 50km TPE1st Shiding 50km Ultramarathon 6:41:08 h143
03.08 72km TPE1st Shichong Creek Summer Ultramarathon 8:37:17 h103
14.04 50km TPE1st Zhenxibao (Cinsbu) 50 km Ultramarathon 5:37:46 h76
16.03 100km TPE3rd Southern Cross-Island Highway 100 km Ultra Marathon 13:40:28 h210
2012
18.11 50km TPE1st Yilan Dongshan River 50km Ultra-Marathon 4:41:18 h58
09.09 50km TPE2nd Flex Power National 50K Track Taichung 5:56:30 h203