|
---|
1969–1979 Amateur Athletic Union | |
---|
1980–1992 The Athletics Congress | |
---|
1993–present USA Track & Field | |
---|
Notes |
- OT: Since 1992, championships incorporated the Olympic Trials in Olympic years, otherwise held as a discrete event.
- 2020 OT: The 2020 Olympic Trials were delayed and held in 2021 due to the COVID-19 pandemic.
- Distance:The event was competed at 200 meters during 1969–1972
|
---|
Source: https://web.archive.org/web/20191106170415/https://www.usatf.org/statistics/USA-Champions/USAOutdoorTF/women/400mH.aspx