Kalendar Perlumbaan Cincin Lembu Merah 2021
| Tarikh | Siri Perlumbaan | Bulatan | Nama Acara |
|---|---|---|---|
| 22 April - 24 April | PSCS - Piala Sukan Porsche Suisse Selesai | Round 1 | |
| 22 April - 24 April | Porsche Sprint Challenge Suisse Selesai | Round 1 | |
| 14 Mei - 16 Mei | Piala Porsche Carrera Benelux Selesai | Round 2 | |
| 14 Mei - 15 Mei | Siri Eropah Ligier Selesai | Round 2 | |
| 29 Mei - 29 Mei | Cabaran Porsche Sprint Eropah Tengah Selesai | Round 1 | |
| 25 Jun - 27 Jun | Porsche Supercup Selesai | Round 2 | Formula 1 BWT Grosser Preis Der Steiermark 2021 |
| 25 Jun - 27 Jun | F1 Grand Prix Austria Selesai | Round 8 | Formula 1 BWT Grosser Preis Der Steiermark 2021 |
| 2 Julai - 4 Julai | Porsche Supercup Selesai | Round 3 | Formula 1 BWT Grosser Preis Von Österreich 2021 |
| 2 Julai - 4 Julai | F1 Grand Prix Austria Selesai | Round 9 | Formula 1 BWT Grosser Preis Von Österreich 2021 |
| 17 Julai - 18 Julai | Piala Sukan Porsche Jerman Selesai | Round 3 | |
| 3 September - 5 September | Sarjana Kereta Pelancongan Jerman Selesai | Round 5 | |
| 10 September - 12 September | Terbuka GT Antarabangsa Selesai | Round 5 |