| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 59.21 | Toronto Grand Prix | 2026-01-24 |
| 100m Backstroke | 56.47 | UT QUAD Meet (vs Calgary, Western, Quebec) | 2026-01-23 |
| 100m Butterfly | 1:01.71 | Toronto Grand Prix | 2026-01-24 |
| 100m IM | 58.49 | UT QUAD Meet (vs Calgary, Western, Quebec) | 2026-01-23 |
| 200m Backstroke | 2:12.00 | Toronto Grand Prix | 2026-01-24 |
| 50m Backstroke | 27.74 | Toronto Grand Prix | 2026-01-24 |
Fontaine, Justin's top personal bests include 100m Backstroke (59.21), 100m Backstroke (56.47), 100m Butterfly (1:01.71), 100m IM (58.49), 200m Backstroke (2:12.00).
Fontaine, Justin swims for Pointe-Claire Swim Club.
Fontaine, Justin has competed in 2 meets.