| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:24.79 | KBM Heats & Finals | 2026-02-20 |
| 100m Breaststroke | 1:47.30 | KBM Heats & Finals | 2026-02-20 |
| 100m Freestyle | 1:15.85 | KBM Heats & Finals | 2026-02-20 |
| 100m IM | 1:34.58 | KBM Pentathlon | 2025-10-19 |
| 200m Backstroke | 2:58.34 | KBM Heats & Finals | 2026-02-20 |
| 200m Freestyle | 2:43.71 | BBST Fall Invitational 2025 | 2025-11-21 |
| 200m IM | 3:10.60 | KBM Heats & Finals | 2026-02-20 |
| 400m Freestyle | 5:57.12 | KBM Distance & Development | 2025-11-08 |
| 50m Backstroke | 39.09 | KBM Heats & Finals | 2026-02-20 |
| 50m Breaststroke | 51.20 | KBM Pentathlon | 2025-10-19 |
| 50m Butterfly | 47.29 | KBM Pentathlon | 2025-10-19 |
| 50m Freestyle | 34.23 | BBST Fall Invitational 2025 | 2025-11-21 |
| 800m Freestyle | 12:07.41 | BBST Fall Invitational 2025 | 2025-11-21 |
Noonan, Marcus's top personal bests include 100m Backstroke (1:24.79), 100m Breaststroke (1:47.30), 100m Freestyle (1:15.85), 100m IM (1:34.58), 200m Backstroke (2:58.34).
Noonan, Marcus swims for Ernestown Barracuda Swim Club.
Noonan, Marcus has competed in 6 meets.