| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:17.29 | GHAC Winter Invitational SCM | 2026-03-06 |
| 100m Breaststroke | 1:21.03 | GHAC Winter Invitational SCM | 2026-03-06 |
| 100m Butterfly | 1:30.05 | Friday Night Races #1 | 2025-11-07 |
| 100m Freestyle | 1:02.26 | GHAC Winter Invitational SCM | 2026-03-06 |
| 200m Backstroke | 2:51.68 | Otters Spooky Splash 2025 | 2025-10-24 |
| 200m Breaststroke | 2:59.31 | GHAC Winter Invitational SCM | 2026-03-06 |
| 200m Freestyle | 2:21.23 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 200m IM | 2:41.35 | Friday Night at the Races #3 | 2026-03-13 |
| 400m Freestyle | 5:02.89 | Friday Night at the Races #3 | 2026-03-13 |
| 50m Backstroke | 37.91 | Friday Night at the Races #2 | 2025-12-12 |
| 50m Breaststroke | 38.40 | GHAC Winter Invitational SCM | 2026-03-06 |
| 50m Freestyle | 28.08 | GHAC Winter Invitational SCM | 2026-03-06 |
| 800m Freestyle | 11:24.07 | OSAC Team Challenge Short Course Swim Meet | 2025-11-14 |
Harrison, JamesR's top personal bests include 100m Backstroke (1:17.29), 100m Breaststroke (1:21.03), 100m Butterfly (1:30.05), 100m Freestyle (1:02.26), 200m Backstroke (2:51.68).
Harrison, JamesR swims for Halton Hills Blue Fins.
Harrison, JamesR has competed in 10 meets.