| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:47.00 | Elaine Thompson Memorial Meet | 2026-01-24 |
| 100m Breaststroke | 2:26.34 | 2025 BTSC Trojan Cup | 2025-12-12 |
| 100m Freestyle | 1:31.44 | Elaine Thompson Memorial Meet | 2026-01-24 |
| 100m IM | 1:53.75 | CCSC June Invitational | 2025-06-21 |
| 200m Backstroke | 3:42.81 | Elaine Thompson Memorial Meet | 2026-01-24 |
| 200m Breaststroke | 4:38.65 | 2025 BTSC Trojan Cup | 2025-12-12 |
| 200m Freestyle | 3:22.00 | 2025 BTSC Trojan Cup | 2025-12-12 |
| 200m IM | 4:05.72 | Elaine Thompson Memorial Meet | 2026-01-24 |
| 50m Backstroke | 49.05 | Elaine Thompson Memorial Meet | 2026-01-24 |
| 50m Breaststroke | 1:10.19 | 2026 Trojan Pentathlon | 2026-03-06 |
| 50m Butterfly | 51.72 | 2026 Trojan Pentathlon | 2026-03-06 |
| 50m Freestyle | 38.46 | Elaine Thompson Memorial Meet | 2026-01-24 |
Klajn, Lucas's top personal bests include 100m Backstroke (1:47.00), 100m Breaststroke (2:26.34), 100m Freestyle (1:31.44), 100m IM (1:53.75), 200m Backstroke (3:42.81).
Klajn, Lucas swims for Barrie Trojan Swim Club.
Klajn, Lucas has competed in 6 meets.