| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:18.00 | Lacombe Big Splash | 2025-06-07 |
| 100m Butterfly | 1:20.13 | Killam Cyclones Making Waves | 2025-07-19 |
| 100m IM | 1:20.72 | Lacombe Big Splash | 2025-06-07 |
| 1500m Freestyle | 4:38.15 | ASSA Provincial Championships | 2025-08-01 |
| 200m Freestyle | 2:25.34 | Region D Regional Championships | 2025-07-25 |
| 200m IM | 3:05.49 | Castor Tritons Invitational | 2025-06-21 |
| 400m Freestyle | 5:21.99 | Region D Regional Championships | 2025-07-25 |
| 50m Backstroke | 36.27 | Lacombe Big Splash | 2025-06-07 |
| 50m Butterfly | 33.69 | Ponoka Gators Summer Splash | 2025-07-05 |
| 50m Freestyle | 30.59 | Lacombe Big Splash | 2025-06-07 |
| 800m Freestyle | 11:18.00 | Region D Regional Championships | 2025-07-25 |
Bellmore, William's top personal bests include 100m Backstroke (1:18.00), 100m Butterfly (1:20.13), 100m IM (1:20.72), 1500m Freestyle (4:38.15), 200m Freestyle (2:25.34).
Bellmore, William swims for Red Deer Marlins Swim Club.
Bellmore, William has competed in 9 meets.