Kalendaryo ng Karera Circuit Zolder 2021
| Petsa | Serye ng Karera | Biluhaba | Pangalan ng Kaganapan |
|---|---|---|---|
| 30 April - 30 April | Porsche RS Class Natapos | Round 2 | |
| 30 April - 30 April | Porsche GT Cup Natapos | Round 2 | |
| 30 April - 30 April | Porsche Boxster Cup Natapos | Round 2 | |
| 30 April - 30 April | Porsche 944 Cup Natapos | Round 2 | |
| 8 May - 9 May | Porsche Sprint Challenge Benelux Natapos | Round 1 | New Race Festival |
| 8 May - 9 May | Porsche Endurance Trophy Benelux Natapos | Round 1 | New Race Festival |
| 6 August - 8 August | Porsche Carrera Cup Benelux Natapos | Round 4 | |
| 6 August - 8 August | German Touring Car Masters Natapos | Round 3 | |
| 6 August - 8 August | Lotus Cup Europa Natapos | Round 2 | |
| 21 August - 22 August | Porsche Endurance Trophy Benelux Natapos | Round 3 | Historic Grand Prix Zolder |
| 23 September - 26 September | Porsche Endurance Trophy Benelux Natapos | Round 4 | 24 Hours of Zolder |
| 8 October - 10 October | Porsche Endurance Trophy Benelux Natapos | Round 5 | American Festival NASCAR Finals |