Algarve International Circuit 2021 Race Calendar
| Date | Racing Series | Round | Event Name |
|---|---|---|---|
| January 23 - January 24 | SuperCars Endurance Series Finished | Round 1 | |
| January 23 - January 24 | GT Winter Series Finished | Round 1 | |
| February 16 - February 17 | GT Winter Series Finished | Round 2 | |
| April 23 - April 25 | International GT Open Finished | Round 8 | |
| June 11 - June 13 | WEC - FIA World Endurance Championship Finished | Round 2 | 8 Hours of Portimão |
| July 15 - July 18 | 24H Series Finished | Round 8 | Hankook 24H Portimao |
| October 15 - October 17 | SuperCars Endurance Series Finished | Round 4 | Algarve Welcome Spring |
| October 22 - October 23 | Ligier European Series Finished | Round 6 | |
| October 22 - October 24 | PCCF - Porsche Carrera Cup France Finished | Round 6 | 4 Hours of Portimão |
| December 11 - December 12 | GT Winter Series Finished | Round 4 |