2021 F4 U.S. Championship
| April 23-25 | Sonoma |
| April 29-May 1 | Laguna Seca |
| June 25-27 | Mid-Ohio |
| July 16-18 | Brainerd |
| September 24-26 | VIR |
| November 5-7 | Circuit of The Americas |
F4 U.S. Championship schedule
| April 23-25 | Sonoma |
| April 29-May 1 | Laguna Seca |
| June 25-27 | Mid-Ohio |
| July 16-18 | Brainerd |
| September 24-26 | VIR |
| November 5-7 | Circuit of The Americas |
