WTSC sent several swimmers to participate in the 2018 HK Marathon Swimming cum Open Water Swimming Competition Series (Part 1) 2018/19 on 13th May at Tai Mei Tuk, Tai Po. Our swimmers won several medals, including Wong Cho Ying, the 2 bronze medals winner in Asia Open Water Swimming Championships, won the silver medal in Open 10 km event (1:47:37.4).
Finally, the club won the Junior (C & D) championship with 72 points, the 2nd runner-up of Junior (A & B) with 54 points, thus won the age group overall 1st runner-up, and the open team overall 1st runner-up.
Girls Team Results
| Event | Swimmer | Time | Resutls |
| Age 9 - 11, 1.7 km | Lau Oi Yin | 21:32.50 | Winner |
| Leung Wing Tsun Rachel | 22:05.71 | 5th Place | |
| Age 14 - 17, 1.7 km | Wong Ching Lam | 17:39.72 | Winner |
| Tam Suet Ying | 19:25.15 | 8th Place | |
| Age 18 - 24, 1.7 km | Chang Yujuan | 18:03.47 | Winner |
| Age 14 or above, Open 10 km | Wong Cho Ying | 1:47:37.40 | 1st Runner Up |
Boys Team Results
| Event | Swimmer | Time | Result |
| Age 9 - 11, 1.7 km | Kwong Jacob Yat Nam | 19:02.24 | Winner |
| Lai King Wo | 19:14.65 | 4th Place | |
| Chan Yui Fung | 19:45.05 | 8th Place | |
| Age 14 - 17, 1.7 km | Xiang Haofeng | 17:45.93 | 7th Place |
| Age 14 or above, Open 10 km | Tse Tsz Fung | 1:41.36.40 | 6th Place |
