| Dates | Course | LMSC | 2023 Meets |
|---|
| Aug 5, 2023 | LCM | OR | 2023 Oregon Masters LCM Association and NW Zone Championship |
| Aug 5, 2023 | LCM | NJ | Jason Nessel Memorial Invitational (LCM) |
| Aug 2-6, 2023 | LCM | FL | 2023 U.S. Masters Swimming Summer National Championship |
| Jul 30, 2023 | LCM | AR | Old School Spirit - Long Course Meters Meet (Outdoor) |
| Jul 29-30, 2023 | LCM | KY | 46th Annual Lakeside Masters Long Course Invitational |
| Jul 29, 2023 | LCM | SP | Rose Bowl Masters LCM Swim Meet |
| Jul 27-30, 2023 | LCM | NB | Midwestern Swimming Long Course Championship Meet |
| Jul 27-30, 2023 | LCM | FL | RAFC Last Splash Invitational (USA-S) |
| Jul 23, 2023 | SCY | PN | 2023 Washington State Senior Games |
| Jul 22-23, 2023 | LCM | ST | South Central LCM Zone Championships |
| Jul 22, 2023 | SCY | MD | Summer Meet No. 2 |
| Jul 21-23, 2023 | LCM | PC | Pacific Masters Swimming Long Course Championships |
| Jul 21-23, 2023 | LCM | FG | 2023 FGC Senior Championships (LCM) |
| Jul 21-23, 2023 | LCM | GA | Georgia LC Senior State Championships |
| Jul 20-23, 2023 | LCM | GA | 2023 North Carolina Swimming LC Senior Championships |
| Jul 20-23, 2023 | LCM | AR | Arkansas Swimming Long Course Championships 2023 |
| Jul 16, 2023 | LCM | NE | 2023 Summer JT LCM Mini-Meet |
| Jul 16, 2023 | LCM | MI | 2023 Eastern Michigan Warmest LCM Swim Meet |
| Jul 15-16, 2023 | SCY | IA | Summer Iowa Games |
| Jul 15-16, 2023 | LCM | FG | 14th Annual June Krauser Summer Splash |
| Jul 15, 2023 | SCM | IL | Kraken Summer Heat SCM 2023 |
| Jul 15, 2023 | LCM | ND | 2023 Walleye Invite |
| Jul 15, 2023 | LCM | CT | Regional YMCA of Western Connecticut LCM Masters Meet |
| Jul 14-17, 2023 | SCY | AM | National Senior Games |
| Jul 14-15, 2023 | LCM | PN | Israeli Arena Masters Championship |
| Jul 14, 2023 | LCM | NI | 2023 Nickel City July Splash |
| Jul 13-16, 2023 | LCM | OH | 2023 Louisiana Senior Long Course State Championships |
| Jul 13-16, 2023 | LCM | VA | 2023 Long Course Senior Championships (USA-S) |
| Jul 9, 2023 | LCM | NB | Cornhusker State Games |
| Jul 9, 2023 | LCM | IA | 2023 DSMY LC Invitational |
| Jul 9, 2023 | LCM | IN | 2023 Summer Invitational at the IU Nat |
| Jul 9, 2023 | LCM | PC | Silver State LCM Masters Meet |
| Jul 9, 2023 | LCM | SP | Mission Viejo Nadadores Masters 13th Annual Patrick Moore Memorial Relay Meet |
| Jul 9, 2023 | LCM | KY | 2023 Lakeside Masters Long Course Mini-Meet |
| Jul 8-9, 2023 | LCM | FL | 2023 SPM Long Course Championship |
| Jul 8-9, 2023 | LCM | SR | Last Chance Invitational |
| Jul 8, 2023 | LCM | OZ | Ed and Ruth Shea Challenge Classic |
| Jul 8, 2023 | LCM | GU | Long Course Summer Splash |
| Jul 8, 2023 | LCM | MR | The Long Course Meet |
| Jul 7-9, 2023 | LCM | AR | Mary Grace Tucker Memorial Invitational 2023 |
| Jul 7-9, 2023 | LCM | GA | DYNA Coda Classic |
| Jul 7-9, 2023 | LCM | NC | MOR Long Course Qualifier |
| Jul 7-8, 2023 | LCM | GA | 2023 GCAT Long Course Last Chance |
| Jul 6-9, 2023 | LCM | SP | 2023 Los Angeles Invitational |
| Jul 6-9, 2023 | LCM | CT | 2023 CONNECTICUT SWIMMING INC. SENIOR CHAMPIONSHIP |
| Jul 1, 2023 | SCM | OH | 2023 Red, White and Swim SCM Meet |
| Jul 1, 2023 | LCM | PN | LCM Summer Meet |
| Jul 1, 2023 | LCM | SP | CCAT Masters LCM Meet |
| Jul 1, 2023 | SCY | FL | Firecracker Day at the Races (USA-S) |
| Jun 25-30, 2023 | SCM | | IGLA London 2023 |
| Jun 25, 2023 | SCM | MD | 2023 Talbot Masters SCM Invitational |
| Jun 25, 2023 | SCY | MI | Michigan Masters Swimming Regatta at the Detroit Yacht Club |
| Jun 24-25, 2023 | SCY | NE | 2023 Bay State Games Swimming |
| Jun 24-25, 2023 | LCM | GA | Tommie Jackson Diversity Invitational |
| Jun 24, 2023 | LCM | SP | Semana Nautica Masters LCM Swim Meet |
| Jun 24, 2023 | LCM | OH | YNWL LCM Last Chance |
| Jun 23-25, 2023 | LCM | SP | 2023 SLOS Firecracker Invitational |
| Jun 23-25, 2023 | LCM | AZ | Starlight ABC Invitational |
| Jun 23-24, 2023 | SCY | FL | Area 6 Summer Championships (USA-S) |
| Jun 23-24, 2023 | LCM | AR | Fort Smith Recordsetter 2023 |
| Jun 22-25, 2023 | LCM | SC | 2023 SC YSSC 20th Annual LC Firecracker Invitational |
| Jun 17-18, 2023 | LCM | NT | 2023 TFAM Chasing Cuts Invitational |
| Jun 17-18, 2023 | LCM | NC | MOR Liberty Meet |
| Jun 17, 2023 | LCM | VA | Big Kahuna Masters Classic |
| Jun 17, 2023 | LCM | NJ | Somerset County YMCA Masters "Summer Tsunami" LCM Swim Meet |
| Jun 17, 2023 | LCM | PC | 2023 QuickSilver Masters Fast and Free LCM Meet |
| Jun 17, 2023 | LCM | OH | 2023 MIAMI REDFIN LONG COURSE MEET |
| Jun 17, 2023 | LCM | IN | 10th Annual MMA Summer Splash |
| Jun 17, 2023 | LCM | WI | 2023 Wisconsin LCM State Champs at Schroeder |
| Jun 17, 2023 | LCM | PV | DC Water Wizards Juneteenth Long Course Meters Relay Meet |
| Jun 16-18, 2023 | LCM | AZ | MAC Narwhal Invite |
| Jun 16-17, 2023 | LCM | SC | 2023 Greenville Splash LCM Invitational |
| Jun 16, 2023 | LCM | AK | Dan Fawcett Memorial LC Swim Meet |
| Jun 16, 2023 | LCM | NI | 2023 Nickel City June Splash |
| Jun 15-18, 2023 | LCM | CT | 2023 GRIT LC Invitational |
| Jun 11, 2023 | SCY | IA | 2023 Iowa Senior Games |
| Jun 11, 2023 | LCM | MV | Make a Ripple 9 |
| Jun 10-11, 2023 | LCM | OR | 2023 COMA LCM Meet & Lake Juniper Open Water Buoy Swim |
| Jun 10-11, 2023 | LCM | ND | 2023 RRV-Bill Siders Invitational |
| Jun 10, 2023 | SCY | NI | Empire State Senior Games |
| Jun 10, 2023 | SCY | SE | Alabama State Games |
| Jun 9-12, 2023 | LCM | AZ | Phoenix Summer Invite 2023 |
| Jun 9-11, 2023 | LCM | GA | 2023 DYNA Summer Invitational |
| Jun 9-11, 2023 | LCM | NC | GCY Sprint & Distance 2023 |
| Jun 9-11, 2023 | LCM | CT | 2023 Marlins June LCM Invite Invitational |
| Jun 8-11, 2023 | LCM | FL | 2023 RAFC Summer Solstice Invitational (USA-S) |
| Jun 8-10, 2023 | LCM | UT | Utah Summer Games |
| Jun 4, 2023 | LCM | GU | Graham Johnston Invitational 2023 |
| Jun 4, 2023 | SCY | SP | 2023 Pasadena Senior Games |
| Jun 3-4, 2023 | LCM | GA | 2023 Betsy Dunbar Meet |
| Jun 3, 2023 | SCY | WI | WISCONSIN MASTERS SUMMER FUN MEET AND SWIM CLINIC |
| Jun 3, 2023 | LCM | SP | OC Riptide Aquatics Masters LCM Meet |
| Jun 3, 2023 | LCM | OR | CRST Summer Blast |
| Jun 3, 2023 | LCM | GA | 2023 GA June Jam Time Trial |
| Jun 2-4, 2023 | LCM | SE | 2023 SE BSL Jack Barnacastle Invite |
| Jun 2-4, 2023 | LCM | OH | 2023 Damon McCoy Invitational |
| Jun 2-4, 2023 | LCM | GA | STAR Andrew E. Hartle Invitational |
| Jun 2-4, 2023 | LCM | OK | 2023 BVSC Stars of Summer |
| Jun 2, 2023 | LCM | MN | Swim into Summer Masters Meet 2023 |
| May 27-28, 2023 | LCM | SP | Mission Viejo Nadadores Masters LCM Swim Meet |
