Siou-Yu (戴秀妤) Dai
Born : 1963 Cat. W60 Ultrarunner since 2006 TPE
61
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
65
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
6
Countries visited ?CHNChinaJPNJapanKORSouth KoreaSGPSingaporeTHAThailandTPETaiwan
11,1%
Rank quotient ?This runner's calculation uses 127 eligible race(s): Σ(rank − 1) = 3 456; Σ finishers = 31 181. 3 456 / 31 181 × 100 = 11.08%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed128
Km — ultra races9 716 km
> 100 km17
> 160 km4
> 24h7
Longest race191,9 km

Km per year (ultra races)

253
3 races
2022
670
8 races
2023
426
5 races
2024
387
6 races
2025
308
4 races
2026

Race types (share of distance)

Road93,1%
Trail5,6%
Stage1,3%

Wins & podiums (ultra)

🏆 Win3
🏆 Win F61
🏅 Top 38
🏅 Top 3 F88
Longest winning streak1
Current streak0

HISTORY

130 race(s) · 2 stage(s) nested · 18 split(s) nested
DateRacePerf.Rk
2026
12.09 100km TPE3rd Yizai Jincheng 100km 13:10:45 h19
12.04 14h TPE10th National Taipei University 14H Ultra Marathon 107.532 km6
21.03 50km TPE10th Beigan Ultramarathon 6:06:58 h22
01.03 50km TPE9th Fencihu 50 km Ultra Run 5:37:53 h9
2025
28.09 14h TPE1st Luzhu Ultra Marathon - 14h 101.280 km19
20.09 100km TPE2nd Yizai Jincheng 100km 13:14:08 h20
05.09 45.2k TPE1st Hehuanshan Ultra Run 6:16:27 h171
30.08 49.8km TPE1st Taiwan Town and Country - Zhongliao 5:29:58 h5
27.04 52.7km TPE6th New Store Old Street Ultra Run 6:01:37 h8
21.02 12h TPE14th Taipei 12hr Ultra Marathon Night Run 83.714 km14
2024
22.12 100km TPE7th Shancheng 100 km Ultramarathon 12:52:59 h132
05.10 6h TPE12th Flex Power National 6h Track Run 49.600 km29
28.04 12h TPE9th National Taipei University 12H Ultra Marathon 95.584 km29
03.03 100km TPE7th Fencihu 100 km Ultra Run 13:00:21 h76
21.01 50mi TPE10th Zhenxibao (Cinsbu) 50 Mile Ultramarathon II 11:53:43 h23
2023
01.12 24h TPEIAU 24h WC Taipei (all races combined) 72.000 km290
01.12 12h TPEIAU 24h WC Taipei - 12h Split 64.800 km292
01.12 24h TPEIAU 24h WC Taipei 72.000 km243
10.10 50km TPE11th Flex Power National 50K Track Taipei 5:09:50 h53
27.05 45.6km TPE1st Taiwan Town and Country - Waipu 4:31:13 h7
13.05 12h TPE8th National Taipei University 12H Ultra Marathon 101.460 km40
30.04 52.7km TPE4th New Store Old Street Ultra Run 5:18:51 h1 🏆
22.04 12h TPE8th Yizai Jincheng 12h Ultramarathon 99.962 km15
11.02 24h TPE12th Taipei 24hr Ultra Marathon 176.276 km19
2022
25.12 100km TPE5th Shancheng 100 km Ultramarathon 11:42:31 h89
18.09 100km TPE4th Shudder Sheipa Ultramarathon - 100km 12:11:39 h21
14.08 53km TPE3rd New Store Old Street Ultra Run 5:40:10 h6
2021
26.11 100mi TPE10th Yilan Dongshan River 100mi Ultra-Marathon 19:06:55 h15
28.02 100km TPE4th Fencihu 100 km Ultra Run 12:40:09 h63
12.02 58.6km TPE14th Chinese New Year Marathon - Ox 5:42:59 h10
2020
13.12 100km TPE4th Shancheng 100 km Ultramarathon 10:57:14 h20
28.11 12h TPE7th Yizai Jincheng 12h Ultramarathon 114.128 km7
20.09 100km TPE3rd Shudder Sheipa Ultramarathon - 100km 12:42:22 h21
08.02 50km TPE9th Taipei 24hr Ultra Marathon - 50km 5:08:05 h33
08.02 50mi TPE9th Taipei 24hr Ultra Marathon - 50mi 9:19:54 h38
08.02 100km TPE9th Taipei 24hr Ultra Marathon - 100km 12:04:34 h36
08.02 6h TPE9th Taipei 24hr Ultra Marathon - 6h Split 57.018 km34
08.02 12h TPE9th Taipei 24hr Ultra Marathon - 12h Split 99.450 km36
08.02 24h TPE9th Taipei 24hr Ultra Marathon 116.688 km50
19.01 100km TPE8th Zhenxibao (Cinsbu) 100 km Ultramarathon 12:07:11 h48
2019
14.12 24h TPE19th Soochow/Taipei 24h Ultramarathon 188.847 km22
21.09 6h TPE4th Doubang 6h Ultramarathon 60.160 km19
28.07 53km TPE1st Deep Feelings Ultra Run 5:34:32 h6
14.07 45.8km TPE4th Lovers' Gorge Ultra Run 4:23:43 h9
23.06 50km TPE1st North Dawu Mountain Ultra Marathon 5:27:33 h12
27.04 12h TPE6th Yizai Jincheng 12h Ultramarathon 110.414 km5
23.03 50km TPE3rd Beigan Ultramarathon 6:07:44 h30
05.02 54.4km TPE12th Tainan Branch Friendship Cup Chinese New Year Marathon 5:41:40 h27
20.01 80km TPE7th Zhenxibao (Cinsbu) 80 km Ultramarathon 9:42:26 h17
2018
30.12 47km TPE1st Paolai Shancheng Ultramarathon 4:25:15 h41
09.09 46km TPE1st Luminous Bird's Daughter Full Moon Ultra Run 6:22:50 h7
07.04 12h TPE5th Yizai Jincheng 12h Ultramarathon 108.606 km7
17.03 100km TPE8th Southern Cross-Island Highway 100 km Ultra Marathon 9:35:37 h5
10.02 24h TPE7th Taipei 24hr Ultra Marathon 191.891 km9
21.01 100km TPE6th Zhenxibao (Cinsbu) 100 km Ultramarathon 11:45:09 h53
2017
16.12 100km TPE7th Flex Power National 100K Track Taipei 9:51:19 h4
05.08 50km TPEFenjei Ancient Trail 50 6:46:10 h13
29.07 45km TPE2nd Houlong to Xihu Ultra Run 5:59:12 h3 🥉
22.07 47km TPE2nd Litungshan Ultramarathon 6:14:25 h5
16.07 45.5km TPE2nd Ruins of Long-teng Bridge Ultra Run 5:21:38 h7
15.07 47.5km TPE2nd Taihsing to Hsuehchien Ultra Run 6:23:28 h2 🥈
02.07 45km TPE3rd Guanwu Forest Road Ultra Run 7:38:20 h1 🏆
01.07 45km TPE2nd Wufeng to Xiweng Ultra Run 5:21:41 h8
25.06 45km TPE1st Wujhihshan Ultra Run 7:45:40 h26
24.06 47.5km TPE1st Baldcypress Ultra Run 5:17:56 h4
18.06 45km TPE1st Fuguang to Chaipadong Ultra Run 5:13:56 h4
11.03 100km TPE7th Southern Cross-Island Highway 100 km Ultra Marathon 10:11:48 h10
26.02 113km TPE2nd Surround PengHu UltraMarathon - 113 km 12:49:00 h3 🥉
2016
17.12 45km TPE3rd Hsinchu Bao-shan Second Reservoir Ultramarathon 3:54:12 h7
26.11 100km TPE5th Yilan Dongshan River 100km Ultra-Marathon 10:47:01 h15
27.08 6h TPE1st Doubang 6h Ultramarathon 57.600 km16
05.06 50km TPE1st Ultra-Trail Yilan 9:15:36 h48
23.04 50km TPE3rd DaKeng Ultra Run - 50 km 4:59:45 h3 🥉
2015
09.10 48km TPE1st Jhushan Ultramarathon 4:41:14 h45
01.08 45km TPE1st Dasyueshan Ultramarathon 4:57:00 h6
18.04 100km TPE5th The North Face 100K Challenge Taiwan 12:49:55 h21
19.02 50km TPE8th Tainan Branch Friendship Cup Chinese New Year Marathon 4:17:55 h10
25.01 100km TPE3rd Zhenxibao (Cinsbu) 100 km Ultramarathon 10:46:36 h24
2014
18.10 51km TPE3rd Jhen-wu-shan UltraMaraton 4:46:08 h20
09–10.08 122km/2stages TPE1st Shanhailian Ultramarathon 12:12:47 h4
06.04 45.6km TPE1st Mingde Reservoir Ultramarathon 3:47:08 h21
23.02 100km TPE2nd Zhenxibao (Cinsbu) 100 km Ultramarathon 11:16:14 h26
31.01 54km TPE7th Tainan Branch Friendship Cup Chinese New Year Marathon 4:40:43 h13
26.01 6h TPE1st Yizai Jincheng 6h Ultramarathon 62.906 km42
2013
25.08 50km TPE1st Shiding 50km Ultramarathon 5:05:21 h9
18.08 50km TPE2nd Taitung Liji badland 50km Ultra Marathon 4:26:52 h11
03.08 72km TPE1st Shichong Creek Summer Ultramarathon 6:53:26 h16
13.04 100km TPE3rd The North Face 100K Challenge Taiwan 10:23:13 h7
10.02 46.9km TPE6th Tainan Branch Friendship Cup Chinese New Year Marathon 4:16:10 h10
02.02 100km THA2nd The North Face 100 Thailand - 100 km 12:09:19 h13
2012
29.12 61km TPE2nd Yangmingshan Ultra Marathon 5:55:53 h24
08.12 50km TPE2nd Hsinchu Bao-shan Second Reservoir Ultramarathon 4:23:11 h21
21.10 47km TPE1st Jhen-wu-shan UltraMaraton 4:30:33 h21
09.09 50km TPE2nd Flex Power National 50K Track Taichung 4:53:37 h44
12.08 7h TPEBei-tou Long-fong-gu 7 Hrs Ultra-marathon 70.880 km8
24.06 100km road race JPN27. Lake Saroma 100 km Ultramarathon 9:10:18 h163
11.05 100km CHNThe North Face 100 China 14:44:04 h67
05.05 53.5km TPE1st Bei-yi Freeway Ultra Marathon 5:08:56 h41
29.04 50km TPEIlan Donshan River 50 km Ultra-marathon 4:14:43 h33
15.04 100km TPEThe North Face 100K Challenge Taiwan 10:34:28 h10
10.03 100km TPE2nd Southern Cross-Island Highway 100 km Ultra Marathon 9:40:11 h13
26.02 50km TPEHua-shan 50K Ultra Marathon 4:29:21 h31
23.01 48.6km TPE5th Tainan Branch Friendship Cup Chinese New Year Marathon 4:24:01 h18
2011
22.10 12h TPE1st Taipei ocean 12H Ultramarathon 119.610 km5
25.06 100km SGP1st Sundown 100 km Ultramarathon 9:45:52 h7
28.05 100km TPE1st Southern Cross-Island Highway 100 km Ultra Marathon 9:26:54 h7
03.02 54.3km TPE4th Tainan Branch Friendship Cup Chinese New Year Marathon 4:54:17 h9
2010
30.10 100km TPE3rd Huei-lan Cup 100K National Championship 9:32:42 h6
17.10 45.6km TPEHengchun Airport ultra marathon 3:41:37 h32
29.05 84km SGP3rd Sundown Night 84km 8:37:00 h21
16.05 50km TPE2nd Youth Park Cup 50K cross-country Ultra Marathon 4:53:49 h43
25.04 112km JPN20th Fuji 5 Lakes 112 km Challenge 11:54:23 h74
27.03 100km KOR1st IAU 100km Asian Championship 9:41:59 h10
13.03 88km TPE6th Eastern Valley Int. 88k Ultra-marathon Race 7:55:45 h5
14.02 50km TPE3rd Tainan Branch Friendship Cup Chinese New Year Marathon 4:05:52 h6
2009
31.10 100km TPE2nd Huei-lan Cup 100K National Championship 9:29:35 h6
18.10 50km TPE1st Beitou 50km Ultra Marathon 4:45:26 h22
12.09 12h JPN4th Jingu Gaien Ultramarathon 12 Hour 112.710 km1 🏆
28.02 88km TPE5th Eastern Valley Int. 88k Ultra-marathon Race 8:06:00 h2 🥈
21.02 100km TPE2nd Praying for Taiwan - 100K Ultramarathon 9:46:17 h11
26.01 46.5km TPE2nd Tainan Branch Friendship Cup Chinese New Year Marathon 4:05:22 h14
2008
29.11 100km TPE1st Huei-lan Cup 100K National Championship 9:38:40 h7
03.08 50km TPE2nd Kaohsiung Summer 50km Ultramarathon 4:55:24 h21
18.05 50km TPE1st Youth Park Cup 50K cross-country Ultra Marathon 5:08:22 h28
27.01 50km TPE6th Yung Ho 50K Ultra-marathon 4:25:14 h77
2007
24.11 24h TPE7th Soochow/Taipei 24h Ultramarathon 148.329 km26
02.09 50km TPE1st Kaohsiung Summer 50km Ultramarathon 5:01:11 h15
28.01 50km TPE5th Yung Ho 50K Ultra-marathon 4:27:43 h110
2006
25.11 100km TPE2nd NTPU 100K Ultra Marathon 11:10:51 h38
12.11 50km TPE1st Liuqiu Ultramarathon 4:39:34 h33