| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:17.58 | MAC Winter Invitational | 2026-01-22 |
| 100m Backstroke | 1:10.85 | Border City Invitational 2025 | 2025-12-05 |
| 100m Breaststroke | 1:15.84 | MAC Winter Invitational | 2026-01-22 |
| 100m Breaststroke | 1:13.87 | Western Region Short Course Championships | 2026-02-12 |
| 100m Butterfly | 1:25.02 | Brock invitational | 2026-01-11 |
| 100m Butterfly | 1:16.67 | Walker Invitational | 2025-10-25 |
| 100m Freestyle | 1:04.55 | Border City Invitational 2025 | 2025-12-05 |
| 100m IM | 1:13.77 | OUA Sprint Invitational - Semis Results | 2025-10-18 |
| 200m Breaststroke | 2:44.51 | MAC Winter Invitational | 2026-01-22 |
| 200m Breaststroke | 2:40.65 | Border City Invitational 2025 | 2025-12-05 |
| 200m Butterfly | 3:00.89 | 2025 NYAC Cup | 2025-11-14 |
| 200m Freestyle | 2:19.63 | 2025 Age Group International SC | 2025-11-27 |
| 200m IM | 2:34.69 | MAC Winter Invitational | 2026-01-22 |
| 200m IM | 2:31.71 | Border City Invitational 2025 | 2025-12-05 |
| 50m Backstroke | 33.94 | MAC Winter Invitational | 2026-01-22 |
| 50m Backstroke | 35.66 | Western Region Short Course Championships | 2026-02-12 |
| 50m Breaststroke | 34.29 | Brock invitational | 2026-01-11 |
| 50m Breaststroke | 33.97 | Border City Invitational 2025 | 2025-12-05 |
| 50m Butterfly | 32.53 | Walker Invitational | 2025-10-25 |
| 50m Freestyle | 29.95 | Brock invitational | 2026-01-11 |
| 50m Freestyle | 29.41 | 2025 NYAC Cup | 2025-11-14 |
MacInnis, Mason's top personal bests include 100m Backstroke (1:17.58), 100m Backstroke (1:10.85), 100m Breaststroke (1:15.84), 100m Breaststroke (1:13.87), 100m Butterfly (1:25.02).
MacInnis, Mason swims for Brock Niagara Aquatics.
MacInnis, Mason has competed in 14 meets.