| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:41.09 | AA & Nova Tech #4 South Meet | 2026-02-14 |
| 100m Breaststroke | 1:55.42 | 2026 AA & AAA Winter Champs | 2026-03-05 |
| 100m Freestyle | 1:26.52 | AAA/AA #5 LCM Invitational Swim Meet | 2026-04-25 |
| 100m Freestyle | 1:25.40 | Age Group Development #3 | 2025-11-22 |
| 100m IM | 1:37.14 | Nova Tech Aqua Kids #1 South | 2025-10-26 |
| 200m Backstroke | 3:26.76 | AAA/AA #5 LCM Invitational Swim Meet | 2026-04-25 |
| 200m Freestyle | 3:03.09 | AAA/AA #5 LCM Invitational Swim Meet | 2026-04-25 |
| 200m Freestyle | 3:06.59 | 2025 Candy Cane Invitational | 2025-12-12 |
| 200m IM | 3:04.46 | AAA/AA #5 LCM Invitational Swim Meet | 2026-04-25 |
| 200m IM | 3:12.88 | 2026 AA & AAA Winter Champs | 2026-03-05 |
| 50m Backstroke | 43.27 | AAA/AA #5 LCM Invitational Swim Meet | 2026-04-25 |
| 50m Backstroke | 44.13 | Age Group Development #3 | 2025-11-22 |
| 50m Breaststroke | 51.26 | AAA/AA #5 LCM Invitational Swim Meet | 2026-04-25 |
| 50m Breaststroke | 49.50 | Age Group Development #3 | 2025-11-22 |
| 50m Butterfly | 38.89 | 2026 AA & AAA Winter Champs | 2026-03-05 |
| 50m Freestyle | 36.66 | 2026 AA & AAA Winter Champs | 2026-03-05 |
Johnston, Payton's top personal bests include 100m Backstroke (1:41.09), 100m Breaststroke (1:55.42), 100m Freestyle (1:26.52), 100m Freestyle (1:25.40), 100m IM (1:37.14).
Johnston, Payton swims for King's-Edgehill School.
Johnston, Payton has competed in 7 meets.