Yu-Jui (Karl) (顧育瑞) Ku
ID 750163
Born : 1967 Cat. M55 Ultrarunner since 2015 TPE
28
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
40
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
50,1%
Rank quotient ?This runner's calculation uses 29 eligible race(s): Σ(rank − 1) = 3 104; Σ finishers = 6 201. 3 104 / 6 201 × 100 = 50.06%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed29
Km — ultra races2 108 km
> 100 km4
> 24h5
Longest race151,7 km
13th Taipei 24hr Ultra Marathon — 24/2/2024

Km per year (ultra races)

150
2 races
2022
68
1 race
2023
152
1 race
2024
271
4 races
2025
167
2 races
2026

Race types (share of distance)

Road83,3%
Elim.7,0%
Ult.Walk9,7%

Records

50 km5h27'33100 km12h44'2950 mi12h42'4724 h151,74 kmBackyard12 loops

HISTORY

29 race(s) · 7 split(s) nested
DateRacePerf.Rk
2026
28.03 100km JPN2nd Tokyo Story Ultra Walking 24:12:32 h121
10.01 Backyard Ultra TPE4th Taipei Backyard Ultra 67.060 km (10h)55
2025
05.09 45.2k TPE1st Hehuanshan Ultra Run 7:18:56 h305
19.04 104km JPN2nd Osaka Ultra Walking 23:09:16 h54
22.02 24h TPE14th Taipei 24hr Ultra Marathon 86.672 km56
11.01 Backyard Ultra TPE3rd Taipei Backyard Ultra 80.472 km (12h)35
2024
24.02 24h TPE13th Taipei 24hr Ultra Marathon 151.740 km33
2023
11.02 24h TPE12th Taipei 24hr Ultra Marathon 67.799 km105
2022
25.12 100km TPE5th Shancheng 100 km Ultramarathon 12:56:28 h200
26.03 50km TPE6th Beigan Ultramarathon 7:14:42 h49
2021
13.03 100km TPE10th Southern Cross-Island Highway 100 km Ultra Marathon 12:44:29 h187
12.02 58.6km TPE14th Chinese New Year Marathon - Ox 6:10:41 h23
2020
20.11 100km TPE9th Yilan Dongshan River 100km Ultra-Marathon Night Run 13:13:11 h23
26.04 8h TPE1st Flowing Lake 8h Ultra Marathon 57.600 km5
12.01 63km TPE8th Yangmingshan 63km Ultra Marathon 7:16:15 h26
2019
23.06 50km TPE1st North Dawu Mountain Ultra Marathon 7:32:40 h238
14.04 50km TPE4th Tianxishui Ultra Run 5:27:33 h38
09.03 60km TPE9th Southern Cross-Island Highway 60 km Ultra Marathon 6:47:21 h30
2018
24.11 100km TPE7th Yilan Dongshan River 100km Ultra-Marathon Night Run 15:25:00 h82
14.04 110km TPE4th Race Across Taiwan Nonstop 110km 20:00:21 h28
17.03 60km TPE8th Southern Cross-Island Highway 60 km Ultra Marathon 7:54:49 h123
2017
02.12 102km TPE2nd Blue Whale Ultramarathon 102 km 15:50:14 h86
22.10 60km TPE1st Spread in the wind ultramarathon 9:02:24 h322
06.08 46.5km TPE2nd Tianxishui Ultra Run 7:53:11 h251
20.05 50km TPE4th Dakeng Ultra Run - 50 km 6:52:10 h118
08.01 80km TPE5th Zhenxibao (Cinsbu) 80 km Ultramarathon 12:42:47 h117
2016
03.12 45km TPE2nd Muyeh Chihshang Ultramarathon 5:54:18 h43
03.04 48km TPE2nd Jhushan Ultramarathon 6:59:08 h324
2015
01.11 60km TPE1st Chuoshui River 60 km Ultramarathon 8:23:12 h56