An-Rong (Aaron) (王安荣) Ong
Born : 1988 Cat. M35 Ultrarunner since 2015 SGP
32
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
45
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
12
Countries visited ?GERGermanyHKGHong KongINAIndonesiaITAItalyJPNJapanKORSouth KoreaMASMalaysiaPHIPhilippinesSGPSingaporeSLOSloveniaTPETaiwanVIEVietnam
54,1%
Rank quotient ?This runner's calculation uses 32 eligible race(s): Σ(rank − 1) = 6 706; Σ finishers = 12 392. 6 706 / 12 392 × 100 = 54.12%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed32
Km — ultra races2 463 km
> 100 km5
Longest race145,0 km

Km per year (ultra races)

2022
302
4 races
2023
206
3 races
2024
50
1 race
2025
114
1 race
2026

Race types (share of distance)

Road4,1%
Trail95,9%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 30
🏅 Top 3 M1
Longest winning streak0
Current streak0

HISTORY

32 race(s)
DateRacePerf.Rk
2026
09.05 114km JPN4th Aso Volcano Trail 27:05:59 h387
2025
19.09 50km SLOJulian Alps Trail Run by UTMB - Sky Trail 50K 9:54:34 h662
2024
28.11 50km HKG5th Golden 100 Hong Kong - 50 km Run 11:03:55 h89
20.01 100km HKG14th Hong Kong 100 Ultra Trail Race 26:24:41 h849
19.01 56km HKG14th Hong Kong 100 Ultra Trail Race - Half 9:38:45 h180
2023
04.11 102km INA8th Bromo Tengger Semeru Ultra 100km 29:44:38 h40
16.09 50km MAS1st Kailas Mount Ophir Ultra Trail 12:47:28 h60
29.04 50km KOR8th Korea 50K 11:52:35 h299
18.02 100km HKG13th Hong Kong 100 Ultra Trail Race 20:40:29 h433
2020
08.02 50km MAS1st Ultimate Trails of the South 11:41:14 h24
2019
14.12 55km MAS2nd Malaysia Mountain Trail Festival - 55KM Ultra Challenge 13:15:36 h151
12.10 101km SGP8th Craze Ultra 101 km 16:39:56 h25
21.09 70km VIE7. Vietnam Mountain Marathon 70km 13:12:41 h37
07.09 65km GER3. Südthüringentrail - Heldentrail 65 km 9:26:35 h67
28.08 145km ITA10ème Sur les Traces des Ducs de Savoie 39:52:02 h827
22.06 100km MAS5th Ultimate Trails Of Penang Eco 100 km 20:13:46 h6
05.05 50km SGP2nd Forest Force 50 5:48:27 h34
09.03 100km MAS4th Borneo Ultra Trail Marathon BUTM - 100 km 25:11:23 h39
2018
30.12 12h SGP10th MR25 Cross Country Ultra Marathon 84.000 km9
20.10 111km KOR6th Transjeju Int. Trail Run 100 22:29:12 h70
11.08 70km MAS4th The Magnificent Merapoh Trail (TMMT) 70 km 9:51:23 h9
28.04 92km JPN5th Shizuoka to Yamanashi 16:48:50 h160
14.04 70km VIE2nd Vietnam Jungle Marathon 70km 12:58:38 h11
13.01 57km HKG1st TransNT 57 km Run 11:02:23 h178
2017
10.12 71.7km JPN4th Izu Trail Journey 13:47:54 h1140
22.07 55km MAS2nd Cameron 55 km Ultra Trail 13:19:46 h250
10.03 100km HKG6th TransLantau 100 Ultra Trail 26:36:13 h329
28.01 50km PHI1st Mactan SPEED50 6:46:27 h42
2016
19.11 100km TPE1st Formosa Trail 100km 28:51:37 h58
30.07 60km MAS2nd The Magnificent Merapoh Trail (TMMT) 60 km 9:36:10 h23
12.03 50km HKG5th TransLantau 50 Ultra Trail 9:39:59 h218
2015
27.12 12h SGP7th MR25 Cross Country Ultra Marathon 84.000 km32