William John Stacken
ID 1830664
Born : 1982 Cat. M40 Ultrarunner since 2019 USA
11
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
28
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 ?MASMalaysiaSGPSingapore
21,8%
Rank quotient ?This runner's calculation uses 11 eligible race(s): Σ(rank − 1) = 165; Σ finishers = 757. 165 / 757 × 100 = 21.80%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed11
Km — ultra races924 km
> 100 km2
Longest race101,0 km
12th Craze Ultra 101 km — 28/9/2024

Km per year (ultra races)

100
1 race
2022
184
2 races
2023
299
4 races
2024
188
2 races
2025
84
1 race
2026

Race types (share of distance)

Road77,3%
Trail22,7%

Wins & podiums (ultra)

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

Records

50 km5h53'19100 km14h36'5212 h83,22 km

HISTORY

11 race(s)
DateRacePerf.Rk
2026
07.02 84km MAS11th Route 68 Challenge - 84 km 11:08:34 h5
2025
22.02 100km MAS10th Route 68 Challenge - 100 km 14:36:52 h30
08.02 88km SGP5th Lucky 88.88km Hall of Fortune 12:57:00 h7
2024
28.09 101km SGP12th Craze Ultra 101 km 17:17:40 h2 🥈
27.07 60km MAS6th Kadamaian Adventure Race 12:16:35 h42
29.06 50km SGP3rd Ultra Trail Singapore 5:53:19 h39
17.02 88km SGP4th Lucky 88.88km Hall of Fortune 13:44:00 h6
2023
30.09 101km SGP11th Craze Ultra 101 km 18:02:02 h7
24.06 12h SGP8th Bedok Reservoir 12 hour Ultramarathon - Team of 2 category 83.220 km10
2022
22.10 100km SGP1st Ultra Trail Singapore 15:43:04 h15
2019
13.04 12h SGP7th Bedok Reservoir 12 hour Ultramarathon - Team of 2 category 68.800 km13