Races in calendar week 14/2018
All motorsport events on the weekend of 6–8 Apr 2018.
| Circuit | Country | Series |
|---|---|---|
| Curitiba |  Brazil |
|
| Fort Worth (oval) |  USA |
|
| Manama |  Bahrain |
|
| Marrakesh |  Morocco |
|
| Nürburgring (Nordschleife) |  Germany |
|
| Okayama |  Japan |
|
| Phoenix (oval) | USA |
|
| Rosario |  Argentina |
|
| Symmons Plains |  Australia |
|
| Zolder |  Belgium |
|