Chi-Shing (Quick) (杜志成) To
ID 508125
Born : 1972 Cat. M50 Ultrarunner since 2006 HKG
34
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
50
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
5
Countries visited ?CHNChinaHKGHong KongHUNHungaryJPNJapanTPETaiwan
11,1%
Rank quotient ?This runner's calculation uses 34 eligible race(s): Σ(rank − 1) = 1 843; Σ finishers = 16 674. 1 843 / 16 674 × 100 = 11.05%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed37
Km — ultra races3 236 km
> 100 km4
> 160 km1
Longest race195,4 km
7. Balaton Szupermaraton — 20/3/2014

Km per year (ultra races)

50
1 race
2022
551
6 races
2023
350
4 races
2024
100
1 race
2025
100
1 race
2026

Race types (share of distance)

Road87,3%
Trail6,6%
Stage6,0%

Wins & podiums (ultra)

🏆 Win3
🏆 Win M3
🏅 Top 33
🏅 Top 3 M3
Longest winning streak1
Current streak0

Records

50 km5h57'52100 km8h53'0312 h104,51 km

HISTORY

34 race(s) · 3 stage(s) nested
DateRacePerf.Rk
2026
19.04 100km JPN7th Yamadera Zao 100 km Ultra Marathon 10:40:32 h11
2025
18.10 100km JPN8th Iki 100 km Ultra Marathon 10:38:04 h57
2024
24.08 50km CHN5th Ultra Trail Challenge Bailidujuan 50 5:57:52 h18
15.06 100km JPN3. OSJ Aizu Bandaisan Ultramarathon - 100 km 10:42:44 h23
26.05 100km JPN30th Ebisu-Daikoku 100 km Marathon 12:25:29 h115
20.04 100km TPE1st Xuhai Ultra Marathon 10:27:50 h9
2023
30.12 50.7km CHN1st Shenzhen 100 Ultra Trail - 50km 7:36:04 h20
17.09 100km TPE1st Huashan 100 KM 11:05:22 h14
18.06 100km JPN16. Okinoshima 100km Ultra Marathon 11:08:01 h32
11.06 100km JPN11th Hida Takayama 100 km Ultramarathon 10:34:46 h155
23.04 100km JPN14th 100 km Ultra Maranic Osaka 9:30:27 h17
15.04 100km JPN2nd Atsumi Peninsula Ultra Nature Run - 100km 10:54:12 h42
2022
20.11 50km HKG2nd Kailas Fish N Sheep 50k 7:28:15 h14
2019
02.11 100km TPE5th Buddha's Palm 100km Ultramarathon 10:24:34 h1 🏆
08.09 100km JPN7th 100 km Ultramarathon Hakusan-Shirakawago 10:36:24 h47
09.06 100km JPN8th Hida Takayama 100 km Ultramarathon 10:51:59 h305
21.04 118km JPN29th Fuji 5 Lakes 118 km Challenge 11:49:39 h53
2018
16.12 100km JPN3rd Okinawa 100km Ultramarathon 10:26:02 h48
10.11 70km TPE2nd Shei-Pa Ultra-Marathon 6:50:01 h6
21.10 100km JPN24th River Shimanto 100km 10:02:39 h156
16.09 100km JPN18th Tango 100 km Ultramarathon 11:27:59 h215
24.06 100km JPN33. Lake Saroma 100 km Ultramarathon 9:12:05 h194
03.06 100km JPN6th Tokyo Shibamata 100 km 9:26:36 h45
29.04 100km TPE1st Fencihu 100 km Ultra Run 10:35:26 h6
14.04 70km JPN13th Toda Saiko 70 km 6:00:15 h43
21.01 100km JPN28th Miyako 100 km Ultramarathon 10:17:01 h36
2017
29.07 45km TPE2nd Houlong to Xihu Ultra Run 4:38:47 h1 🏆
05.03 100km JPN3rd Nagoura Marathon 100 km 11:40:16 h42
2016
20.11 100km TPE2nd Chuoshui River 100 km Ultramarathon 9:52:07 h1 🏆
24.04 118km JPN26th Fuji 5 Lakes 118 km Challenge 12:25:55 h110
2014
13.12 100km TPE3rd Yilan Dongshan River 100km Ultra-Marathon 8:53:03 h8
20–23.03 195.4km/4stages HUN7. Balaton Szupermaraton 16:08:03 h5
2013
30.03 12h CHN3rd Fuzhou 12h Ultramarathon 104.510 km24
2006
09.04 64km HKG2nd Round the Island Time Trial 6:27:00 h4