| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:24.44 | February Freeze Invitational | 2026-02-01 |
| 100m Backstroke | 1:22.19 | Royal City Invitational | 2025-12-14 |
| 100m Freestyle | 1:11.33 | Western Region Short Course Championships | 2026-02-12 |
| 200m Backstroke | 2:59.10 | Western Region Short Course Championships | 2026-02-12 |
| 200m Freestyle | 2:55.22 | February Freeze Invitational | 2026-02-01 |
| 200m Freestyle | 2:48.93 | Western Region Short Course Championships | 2026-02-12 |
| 200m IM | 3:20.82 | LAC - Nothers Fall Invitational | 2025-11-21 |
| 400m Freestyle | 6:19.84 | LAC - Nothers Fall Invitational | 2025-11-21 |
| 50m Backstroke | 35.85 | Otters Devo & Distance Winter Waves | 2026-01-24 |
| 50m Breaststroke | 47.84 | Royal City Invitational | 2025-12-14 |
| 50m Butterfly | 39.94 | February Freeze Invitational | 2026-02-01 |
| 50m Butterfly | 44.23 | Walker Invitational | 2025-10-25 |
| 50m Freestyle | 32.35 | Western Region Short Course Championships | 2026-02-12 |
| 800m Freestyle | 12:41.59 | David Lawson Invitational 2026 | 2026-01-23 |
Ryan, Donnacha's top personal bests include 100m Backstroke (1:24.44), 100m Backstroke (1:22.19), 100m Freestyle (1:11.33), 200m Backstroke (2:59.10), 200m Freestyle (2:55.22).
Ryan, Donnacha swims for Royal City Aquatics.
Ryan, Donnacha has competed in 7 meets.