Races in calendar week 42/2025
All motorsport events on the weekend of 17–19 Oct 2025.
| Circuit | Country | Series |
|---|---|---|
| Austin |  USA |
|
| Birmingham (Barber Motorsport Park) | USA |
|
| Indianapolis | USA |
|
| Inje (Autopia) |  South Korea |
|
| Kamitsue (Autopolis) |  Japan |
|
| Monza |  Italy |
|
| Portimao (Algarve) |  Portugal |
|
| Talladega (oval) | USA |
|