Most Champion Big Meet events are held in 25M pools. But, from time to time the NAA will authorize a 25 Yard pool for the annual championship. In this case, the preliminary Time Trials are typically held in 25M pools and then the final is done in 25 Yards. These records are from any 25 Yard Championship Big Meets for which the NAA has records.
| Event | Time | Swimmer | Team | Year |
| 8 & Under Girls | ||||
| Freestyle | 16.71 | Maddy Fassina | GLE | 2017 |
| Breaststroke | 22.63 | Emma Bassermann | WAL | 2017 |
| Backstroke | 21.18 | Alice Lasalle | TMR | 2002 |
| Butterfly | 18.63 | Maddy Fassina | GLE | 2017 |
| Freestyle Relay | 1:16.45 | Ecclestone | ECC | 2002 |
| 8 & Under Boys | ||||
| Freestyle | 15.97 | Ryan Connolly | VYC | 2002 |
| Breaststroke | 19.88 | Eric Zeman | VER | 2002 |
| Backstroke | 19.13 | Ryan Connolly | VYC | 2002 |
| Butterfly | 18.18 | Mathieu Leblanc | TMR | 2017 |
| Freestyle Relay | 1:12.78 | Ecclestone | ECC | 2002 |
| 9 & 10 Girls | ||||
| Freestyle | 30.95 | Violette Hall | CSL | 2017 |
| Breaststroke | 39.87 | MAena Maud Utillano | TMR | 2017 |
| Backstroke | 32.40 | Elsa Yazedjian | TMR | 2017 |
| Butterfly | 13.80 | Elsa Yazedjian | TMR | 2017 |
| Freestyle Relay | 2:11.77 | TMR | TMR | 2017 |
| 9 & 10 Boys | ||||
| Freestyle | 30.69 | Kristopher Raschkowan | ELM | 2017 |
| Breastroke | 39.41 | Matt Emory | ELM | 2002 |
| Backstroke | 36.98 | David Cortez | TMR | 2017 |
| Butterfly | 16.08 | Matt Emory | ELM | 2002 |
| Freestyle Relay | 2:11.42 | Elm Park | ELM | 2002 |
| 11 & 12 Girls | ||||
| Freestyle | 27.40 | Caitlin Cuggy | ELM | 2002 |
| Breaststroke | 34.03 | Karolyn Long | ELM | 2002 |
| Backstroke | 34.07 | Olivia Monton | WAL | 2002 |
| Butterfly | 30.51 | Caitlin Cuggy | ELM | 2002 |
| Medley Relay | 2:11.58 | Elm Park | ELM | 2002 |
| Freestyle Relay | 1:54.28 | TMR | TMR | 2017 |
| 11 & 12 Boys | ||||
| Freestyle | 25.42 | Jason Ochiai | FVW | 2002 |
| Breaststroke | 31.93 | Jan Kaspryzcki | FOR | 2002 |
| Backstroke | 31.19 | Shandor Korsos | FVW | 2017 |
| Butterfly | 28.73 | David Narducci | WES | 2017 |
| Medley Relay | 2:12.66 | Elm Park | ELM | 2002 |
| Freestyle Relay | 1:54.28 | TMR | TMR | 2017 |
| 13 & 14 Girls | ||||
| Freestyle | 25.94 | Charlee Legallais | GLE | 2017 |
| Breaststroke | 31.87 | Olivia Lam | TMR | 2017 |
| Backstroke | 29.72 | Maggie Robertson | GLE | 2017 |
| Butterfly | 28.35 | Maggie Robertson | GLE | 2017 |
| Medley Relay | n/a | 2002 | ||
| Freestyle Relay | 1:47.58 | Glenmore | GLE | 2017 |
| 13 & 14 Boys | ||||
| Freestyle | 24.62 | Jason Hillcoat | FVW | 2002 |
| Breaststroke | 31.17 | Chris Buna | ELM | 2002 |
| Backstroke | 28.68 | Dave Emory | ELM | 2002 |
| Butterfly | 27.32 | Francis Maziade | GLE | 2017 |
| Medley Relay | 1:53.61 | Fairview | FVW | 2002 |
| Freestyle Relay | 1:54.28 | TMR | TMR | 2017 |
| Open Women | ||||
| Freestyle | 25.69 | Isabelle Brathwaite | FOR | 2017 |
| Breaststroke | 33.50 | Caitlin Babb | FVW | 2002 |
| Backstroke | 29.34 | Isabelle Brathwaite | FOR | 2017 |
| Butterfly | 27.75 | Isabelle Brathwaite | FOR | 2017 |
| Medley Relay | n/a | 2002 | ||
| Freestyle Relay | 1:46.98 | Fairview | FVW | 2002 |
| Open Men | ||||
| Freestyle | 22.06 | Jason Galet | GLE | 2017 |
| Breaststroke | 27.38 | Jason Galet | GLE | 2017 |
| Backstroke | 26.50 | Jason Galet | GLE | 2017 |
| Butterfly | 25.22 | Matt Donovan | GLE | 2017 |
| Medley Relay | 1:46.78 | Glenmore | GLE | 2017 |
| Freestyle Relay | 1:34.91 | Versailles | VER | 2002 |