| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:14.16 | MAC Winter Invitational | 2026-01-22 |
| 100m Backstroke | 1:12.01 | MAC Jingle Bell | 2025-12-12 |
| 100m Breaststroke | 1:22.92 | MAC Winter Invitational | 2026-01-22 |
| 100m Breaststroke | 1:20.61 | MAC Jingle Bell | 2025-12-12 |
| 100m Butterfly | 1:08.18 | MAC Jingle Bell | 2025-12-12 |
| 100m Freestyle | 1:00.83 | MAC Winter Invitational | 2026-01-22 |
| 100m Freestyle | 59.52 | Gus Ryder Memorial Cup 2025 | 2025-11-07 |
| 100m IM | 1:12.55 | MAC Fall Fest Invitational | 2025-10-18 |
| 200m Backstroke | 2:38.81 | MAC Winter Invitational | 2026-01-22 |
| 200m Backstroke | 2:36.82 | MAC Fall Fest Invitational | 2025-10-18 |
| 200m Breaststroke | 2:54.88 | Gus Ryder Memorial Cup 2025 | 2025-11-07 |
| 200m Butterfly | 2:40.28 | MAC Jingle Bell | 2025-12-12 |
| 200m Freestyle | 2:13.30 | MAC Winter Invitational | 2026-01-22 |
| 200m Freestyle | 2:10.30 | Border City Invitational 2025 | 2025-12-05 |
| 200m IM | 2:32.58 | Gus Ryder Memorial Cup 2025 | 2025-11-07 |
| 400m Freestyle | 4:45.62 | MAC Winter Invitational | 2026-01-22 |
| 400m Freestyle | 4:37.39 | Pan Am Open 2026 | 2026-02-21 |
| 400m IM | 5:22.23 | Gus Ryder Memorial Cup 2025 | 2025-11-07 |
| 50m Backstroke | 35.15 | MAC Summer Invitational | 2025-07-24 |
| 50m Backstroke | 32.70 | Gus Ryder Memorial Cup 2025 | 2025-11-07 |
| 50m Breaststroke | 37.85 | MAC Winter Invitational | 2026-01-22 |
| 50m Breaststroke | 36.65 | MAC Fall Fest Invitational | 2025-10-18 |
| 50m Butterfly | 33.04 | MAC Summer Invitational | 2025-07-24 |
| 50m Butterfly | 32.17 | MAC Fall Fest Invitational | 2025-10-18 |
| 50m Freestyle | 28.10 | MAC Winter Invitational | 2026-01-22 |
| 50m Freestyle | 26.96 | Border City Invitational 2025 | 2025-12-05 |
| 800m Freestyle | 9:35.84 | MAC Winter Invitational | 2026-01-22 |
| 800m Freestyle | 9:27.28 | Gus Ryder Memorial Cup 2025 | 2025-11-07 |
Lukas Roubian's top personal bests include 100m Backstroke (1:14.16), 100m Backstroke (1:12.01), 100m Breaststroke (1:22.92), 100m Breaststroke (1:20.61), 100m Butterfly (1:08.18).
Lukas Roubian swims for Markham Aquatic Club.
Lukas Roubian has competed in 7 meets.