| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:16.73 | Edmonton Open 2026 | 2026-01-30 |
| 100m Backstroke | 1:12.00 | 2025 Prairie Winter International | 2025-12-11 |
| 100m Breaststroke | 1:33.54 | Norm Banfield Memorial Open Development Meet | 2025-10-03 |
| 100m Butterfly | 1:14.84 | ManSask Provincial Championships | 2025-07-10 |
| 100m Butterfly | 1:13.43 | 2026 Manta Grand Prix | 2026-02-20 |
| 100m Freestyle | 1:04.88 | Edmonton Open 2026 | 2026-01-30 |
| 100m Freestyle | 1:02.91 | The Steve Molloy Invitational 2025 | 2025-11-07 |
| 100m IM | 1:13.69 | 2025 Prairie Winter International | 2025-12-11 |
| 200m Backstroke | 2:36.39 | 2026 Manta Grand Prix | 2026-02-20 |
| 200m Breaststroke | 3:13.15 | Norm Banfield Memorial Open Development Meet | 2025-10-03 |
| 200m Freestyle | 2:22.71 | Edmonton Open 2026 | 2026-01-30 |
| 200m Freestyle | 2:17.53 | 2025 Prairie Winter International | 2025-12-11 |
| 200m IM | 2:43.73 | Edmonton Open 2026 | 2026-01-30 |
| 200m IM | 2:42.67 | Norm Banfield Memorial Open Development Meet | 2025-10-03 |
| 400m Freestyle | 5:00.89 | 2025 Rural Round UP Swim Meet | 2025-12-05 |
| 400m IM | 5:48.05 | Seals West Side Challenge | 2025-11-28 |
| 50m Backstroke | 35.31 | Edmonton Open 2026 | 2026-01-30 |
| 50m Backstroke | 33.67 | 2025 Prairie Winter International | 2025-12-11 |
| 50m Breaststroke | 41.63 | Bison Sprint IM Invitational | 2025-10-18 |
| 50m Butterfly | 32.21 | Edmonton Open 2026 | 2026-01-30 |
| 50m Butterfly | 31.35 | 2025 Prairie Winter International | 2025-12-11 |
| 50m Freestyle | 29.83 | Edmonton Open 2026 | 2026-01-30 |
| 50m Freestyle | 28.54 | 2025 Prairie Winter International | 2025-12-11 |
| 800m Freestyle | 10:52.59 | ManSask Provincial Championships | 2025-07-10 |
| 800m Freestyle | 10:25.59 | The Steve Molloy Invitational 2025 | 2025-11-07 |
Griffith, Ceinwyn's top personal bests include 100m Backstroke (1:16.73), 100m Backstroke (1:12.00), 100m Breaststroke (1:33.54), 100m Butterfly (1:14.84), 100m Butterfly (1:13.43).
Griffith, Ceinwyn swims for Brandon Bluefins Swim Club.
Griffith, Ceinwyn has competed in 10 meets.