| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:08.79 | Winter Waves Invitational | 2026-03-13 |
| 100m Breaststroke | 1:29.63 | 2025 SNL Provincial Championships | 2025-05-30 |
| 100m Freestyle | 1:01.58 | Winter Waves Invitational | 2026-03-13 |
| 100m IM | 1:12.65 | Bluefins Fall Pentathlon | 2025-11-14 |
| 200m Backstroke | 2:38.86 | Bluefins Fall Pentathlon | 2025-11-14 |
| 200m Breaststroke | 3:01.01 | Bluefins Fall Pentathlon | 2025-11-14 |
| 200m Freestyle | 2:22.54 | Winter Waves Invitational | 2026-03-13 |
| 200m IM | 2:52.96 | 2025 SNL Provincial Championships | 2025-05-30 |
| 400m Freestyle | 5:05.17 | Winter Waves Invitational | 2026-03-13 |
| 50m Backstroke | 31.81 | Winter Waves Invitational | 2026-03-13 |
| 50m Butterfly | 32.34 | Bluefins Fall Pentathlon | 2025-11-14 |
| 50m Freestyle | 27.52 | Winter Waves Invitational | 2026-03-13 |
Giles, Joshua's top personal bests include 100m Backstroke (1:08.79), 100m Breaststroke (1:29.63), 100m Freestyle (1:01.58), 100m IM (1:12.65), 200m Backstroke (2:38.86).
Giles, Joshua swims for St. John's Legends Swim Club.
Giles, Joshua has competed in 3 meets.