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David Johnston

Personal Bests

Best times from available individual swims and official relay lead-offs; career coverage may be incomplete. Select an event to show its progression.

2023 Phillips 66 National Championships — Swimming · Indianapolis, IN · Date unavailable

3:45.75

2024 World Aquatics Championships - Doha · Date unavailable

7:48.20

2024 U.S. Olympic Team Trials — Swimming · Lucas Oil Stadium, Indianapolis, IN · Date unavailable

14:52.74

200 Breaststroke

2022 TYR Pro Swim Series - Mission Viejo · San Antonio, United States of America · Date unavailable

2:23.33

200 Butterfly

2022 TYR Pro Swim Series - Mission Viejo · San Antonio, United States of America · Date unavailable

2:03.73

2024 World Aquatics Championships - Doha · Date unavailable

4:12.51

All Results 66 swims · 16 meets

2025 TYR Summer Championships

Race dates unavailable.

400 IM LCM
Final24:12.55
400 IM LCM
Heat14:17.87
1500 Freestyle LCM
Final115:02.15

2025 Toyota U.S. National Championships · Indiana University Natatorium, Indianapolis, IN

Race dates unavailable.

400 Freestyle LCM
Final43:47.10
400 Freestyle LCM
Heat53:48.45
800 Freestyle LCM
Heat37:49.85
1500 Freestyle LCM
Heat214:57.83
400 IM LCM
Heat—DQ

2025 NCAA Division I Men's Swimming & Diving

400y IM SCY26 Mar 2025
Preliminary83:38.56
400y IM SCY26 Mar 2025
Championship Final83:42.73
500y Freestyle SCY26 Mar 2025
Consolation Final104:09.48
500y Freestyle SCY26 Mar 2025
Preliminary94:09.54
1650y Freestyle SCY26 Mar 2025
Final714:30.48

2024 Olympic Games Paris

Race dates unavailable.

1500 Freestyle LCM
Heat715:10.64

2024 U.S. Olympic Team Trials — Swimming · Lucas Oil Stadium, Indianapolis, IN

Race dates unavailable.

400 Freestyle LCM
Final33:46.19
400 Freestyle LCM
Heat23:47.17
800 Freestyle LCM
Final47:50.23
800 Freestyle LCM
Heat37:52.49
1500 Freestyle LCM
Final214:52.74
1500 Freestyle LCM
Heat215:02.42

2024 World Aquatics Championships - Doha

Race dates unavailable.

400 Freestyle LCM
Heat123:46.99
400 IM LCM
Heat14:12.51
400 IM LCM
Final54:13.05
800 Freestyle LCM
Heat117:48.20

2023 Toyota US Open — Swimming · Greensboro, NC

Race dates unavailable.

400 Freestyle LCM
Final63:51.02
400 Freestyle LCM
Heat83:52.47
800 Freestyle LCM
Heat27:53.87
1500 Freestyle LCM
Heat415:13.36

2023 World Aquatics Championships - Fukuoka

Race dates unavailable.

400 Freestyle LCM
Heat173:48.68

2023 Phillips 66 National Championships — Swimming · Indianapolis, IN

Race dates unavailable.

400 Freestyle LCM
Final13:45.75
400 Freestyle LCM
Heat43:49.07
800 Freestyle LCM
Heat57:51.70
1500 Freestyle LCM
Heat415:03.85

2023 TYR Pro Series - Mission Viejo · Knoxville, United States of America

Race dates unavailable.

400 Freestyle LCM
Heat23:56.18
400 IM LCM
Final14:17.27
400 IM LCM
Heat14:23.28
800 Freestyle LCM
Final48:04.62
1500 Freestyle LCM
Final215:16.19

2023 NCAA Division I Men's Swimming & Diving Championships

400y IM SCY22 Mar 2023
Preliminary53:37.90
400y IM SCY22 Mar 2023
Championship Final83:40.10
500y Freestyle SCY22 Mar 2023
Championship Final24:08.79
500y Freestyle SCY22 Mar 2023
Preliminary14:10.02
1650y Freestyle SCY22 Mar 2023
Final414:35.51

2022 16th FINA World Swimming Championships (25m) · Melbourne

Race dates unavailable.

800 Freestyle SCM
Final57:34.33
1500 Freestyle SCM
Final814:35.27

2022 TYR Pro Swim Series - Mission Viejo · San Antonio, United States of America

Race dates unavailable.

200 Butterfly LCM
Heat42:03.73
200 Butterfly LCM
Final52:03.95
200 Breaststroke LCM
Heat42:23.33
400 IM LCM
Final14:19.54
400 IM LCM
Heat14:22.31
1500 Freestyle LCM
Final115:18.32
200 IM LCM
Heat—NS

2022 NCAA Division I Men's Swimming & Diving Championships

400y IM SCY23 Mar 2022
Preliminary63:38.90
400y IM SCY23 Mar 2022
Championship Final73:40.05
500y Freestyle SCY23 Mar 2022
Preliminary74:10.96
500y Freestyle SCY23 Mar 2022
Championship Final64:11.57
1650y Freestyle SCY23 Mar 2022
Final514:33.61

2021 U.S. Olympic Team Trials — Wave II · CHI Health Center, Omaha, NE

Race dates unavailable.

400 IM LCM
Heat74:16.74
400 IM LCM
Final64:16.81
800 Freestyle LCM
Heat117:58.73
1500 Freestyle LCM
Final715:18.61
1500 Freestyle LCM
Heat815:22.61

2021 NCAA Division I Men's Swimming & Diving Championships

400y IM SCY24 Mar 2021
Preliminary83:40.80
400y IM SCY24 Mar 2021
Championship Final83:43.06
500y Freestyle SCY24 Mar 2021
Preliminary174:14.36
1650y Freestyle SCY24 Mar 2021
Final714:40.13