| EVENT | SCY | LCM |
| 50 FR | 20.49 | 23.99 |
| 100 FR | 44.39 | 51.99 |
| 200 FR | 1:38.39 | 1:54.29 |
| 400/500 FR | 4:28.29 | 4:02.79 |
| 800/1000 FR | 9:13.19 | 8:23.09 |
| 1500/1650 FR | 15:34.19 | 16:05.09 |
| 100 BK | 49.39 | 58.79 |
| 200 BK | 1:47.99 | 2:06.99 |
| 100 BR | 55.79 | 1:05.89 |
| 200 BR | 2:01.19 | 2:23.29 |
| 100 FL | 48.99 | 56.49 |
| 200 FL | 1:47.89 | 2:05.09 |
| 200 IM | 1:48.89 | 2:08.29 |
| 400 IM | 3:52.69 | 4:33.09 |
| 4X50 FR RELAY | X | X |
| 4X100 FR RELAY | X | 3:33.59 |
| 4X200 FR RELAY | X | 7:47.69 |
| 4X50 MED. RELAY | X | X |
| 4X100 MED. RELAY | X | 3:56.29 |
| * Qualifying period is from June 1, 2023 through Entry Deadline | ||
Speedo Junior National Championships | 2023 Time Standards | Bonus | Men
| EVENT | SCY | LCM |
| 50 FR | 20.79 | 24.29 |
| 100 FR | 45.39 | 52.89 |
| 200 FR | 1:39.39 | 1:55.69 |
| 400/500 FR | 4:30.49 | 4:05.29 |
| 800/1000 FR | 9:25.49 | 8:33.79 |
| 1500/1650 FR | 15:46.99 | 16:14.99 |
| 100 BK | 49.99 | 58.89 |
| 200 BK | 1:49.49 | 2:08.49 |
| 100 BR | 56.59 | 1:06.59 |
| 200 BR | 2:03.79 | 2:24.99 |
| 100 FL | 49.59 | 57.09 |
| 200 FL | 1:50.79 | 2:06.89 |
| 200 IM | 1:50.69 | 2:09.79 |
| 400 IM | 3:58.79 | 4:36.99 |
| 4X50 FR RELAY | X | X |
| 4X100 FR RELAY | X | X |
| 4X200 FR RELAY | X | X |
| 4X50 MED. RELAY | X | X |
| 4X100 MED. RELAY | X | X |
| * Qualifying period is from June 1, 2023 through Entry Deadline | ||
Venue
The 2023 Speedo Junior National Championships will be held July 31- through August 04, 2023, at the William Woollett Jr. Aquatics Center in Irvine, California.