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| Name: | Ong, Boon-Seong |
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| Residence: | |||
| Year of birth: | 1971 | (Cat. german: M55) | |
| Date of birth: | 27.12.1971 | (Cat. internat.: M50) | |
| Nationality: | MAS  |
Malaysia | |
| RunnerID: | 1296946 | ||
5 search results (5 Events, 333.7 km). (More)
| 2025 | 1 Event, 50 km (More) | ||||
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| 03.05.2025 | Amazean Jungle Thailand by UTMB - Betong 50 (THA) | 50km | |||
| 11:57:28 h | Ong, Boon-Seong | Overall: 228 | M: 187 | Cat M50: 11 | |
| 2024 | 2 Events, 153 km (More) | ||||
| 07.12.2024 | Chiangmai Thailand by UTMB - HMONG 50 (THA) | 53km | |||
| 9:54:49 h | Ong, Boon-Seong | Overall: 1033 | M: 767 | Cat M50: 59 | |
| 27.-28.04.2024 | TITI 100km Road Ultra Marathon (MAS) | 100km | |||
| 15:21:54 h | Ong, Boon-Seong | Overall: 21 | M: 19 | Cat M50: 3 | |
| 2022 | 1 Event, 80.7 km (More) | ||||
| 06.-07.08.2022 | CM6 Run - CM4 81 Km (THA) | 80.7km | |||
| 22:19:49 h | Ong, Boon-Seong | Overall: 93 | M: 76 | Cat M50: 8 | |
| 2019 | 1 Event, 50 km (More) | ||||
| 17.03.2019 | TITI 50km Road Ultra Marathon (MAS) | 50km | |||
| 6:37:35 h | Ong, Boon-Seong | Overall: 22 | M: 17 | Cat M45: 3 | |
Personal bests
Your list of personal best performances only contains performances of races which can be included into rankings.
In brackets rank in yearly international/national rankings.
| PB | 2025 | 2024 | 2022 | 2019 |
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