American Masters 24 hr. Outdoor Track & Field Records
| pending | |
| women-only |
Men
| Division | Performance | Name | Location | Date |
| 40-44 | 252,308 m | Bernd Heinrich (43) | Brunswick, ME | 1983-Sep-03 |
| 40-44 | 253,615 m (p) | Jacob Jackson (41) | Phoenix, AZ | 2018-Dec-09 |
| 45-49 | 252,066 m | Joe Fejes (47) | Phoenix, AZ | 2012-Dec-15 |
| 50-54 | 240,185 m | Bob Hearn (50) | Phoenix, AZ | 2015-Dec-19 |
| 50-54 | 247,921 m (p) | Bob Hearn (53) | Phoenix, AZ | 2018-Dec-09 |
| 55-59 | 219,723 m | Roy Pirrung (55) | San Diego, CA | 2003-Nov-08 |
| 60-64 | 202,123 m | Carlton Mendell (62) | Brunswick, ME | 1984-Sep-01 |
| 65-69 | 180,407 m | Beacham Toler (66) | Plano, TX | 1994-Nov-25 |
| 70-74 | 172,800 m | Edson Sower (72) | Phoenix, AZ | 1988-Jan-10 |
| 70-74 | 179,599 m (p) | Gene Dykes (71) | Sharon Hill, PA | 2019-May-12 |
| 75-79 | 176,033 m | Ray Piva (77) | San Diego, CA | 2003-Nov-08 |
| 80-84 | 123,002 m | Bill Dodson (81) | Riverbank, CA | 2017-Feb-25 |
| 80-84 | 126,741 m (p) | Jimmie Barnes (80) | Canberra, AUS | 2019-Mar-15 |
Women
| Division | Performance | Name | Location | Date |
| 40-44 | 237,662 m | Traci Falbo (43) | Phoenix, AZ | 2014-Dec-14 |
| 45-49 | 219,340 m | Sue Ellen Trapp (45) | Portland, OR | 1991-Sep-28 |
| 50-54 | 214,000 m | Laurie Dymond (50) | Sharon Hill, PA | 2016-May-14 |
| 55-59 | 213,930 m | Sue Ellen Trapp (56) | Dallas, TX | 2002-Nov-29 |
| 60-64 | 170,165 m | Helen Klein (62) | Santa Rosa, CA | 1985-Mar-16 |
| 65-69 | 176,223 m | Helen Klein (68) | Santa Rosa, CA | 1991-Mar-24 |