Kalendar Perlumbaan TT Litar Assen 2025
| Tarikh | Siri Perlumbaan | Bulatan | Nama Acara |
|---|---|---|---|
| 18 Mac - 18 Mac | Piala Lumba BMW Selesai | Round 1 | |
| 3 Jun - 3 Jun | Piala Lumba BMW Selesai | Round 4 | |
| 9 Julai - 9 Julai | Cabaran Porsche Sprint Benelux Selesai | Round 2 | |
| 8 Ogos - 10 Ogos | Piala Porsche Carrera Benelux Selesai | Round 4 | JACK'S Racing Day |
| 10 September - 10 September | Kelas Porsche RS | Round 5 | |
| 10 September - 10 September | Piala Porsche GT4 | Round 5 | |
| 10 September - 10 September | Piala Porsche GT | Round 5 | |
| 10 September - 10 September | Piala Porsche Cayman | Round 5 | |
| 10 September - 10 September | Piala Boxster Porsche | Round 5 | |
| 10 September - 10 September | Piala Porsche 944 | Round 5 | |
| 26 September - 27 September | Cabaran Bersejarah Kelab Porsche | Round 5 | ADAC Racing Weekend Assen |