an Entity references as follows:
The 2020 United States Olympic trials for track and field were staged in Eugene, Oregon, after an initial bid for Hilmer Lodge Stadium in Walnut, California failed. This was first major event for the redesigned and rebuilt Hayward Field. Organized by USA Track and Field and TrackTown USA, the ten-day competition was originally scheduled for June 19–28, 2020, but was rescheduled to June 18–27, 2021 due to the COVID-19 pandemic and the postponement of the 2020 Summer Olympics to 2021. It is serving as the national championships in track and field for the United States.