Kalendar Perlumbaan Litar Antarabangsa Chang 2021
| Tarikh | Siri Perlumbaan | Bulatan | Nama Acara |
|---|---|---|---|
| 14 Mei - 16 Mei | TSS - Thailand Super Series Selesai | Event 3 | Event 3 |
| 2 Julai - 4 Julai | LSTA - Lamborghini Super Trofeo Asia Selesai | Round 2 | |
| 2 Julai - 4 Julai | GTWC Asia - GT World Challenge Asia Selesai | ROUND 5 & 6 | |
| 10 September - 12 September | Super Turbo Thailand Selesai | Round 5 & 6 | |
| 8 Oktober - 10 Oktober | Piala Wanita Siri Toyota Vios Selesai | Round 1 | |
| 29 Oktober - 31 Oktober | TSS - Thailand Super Series Selesai | Event 1 | Event 1 |
| 17 Disember - 18 Disember | Piala Wanita Siri Toyota Vios Selesai | Round 4 | |
| 23 Disember - 26 Disember | TSS - Thailand Super Series Selesai | Event 2 | Event 2 |