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Supercars has shortened its three races at the Penrite Oil Sandown SuperSprint to 36 laps apiece.
Practice 1, Practice 2, and the three-part Qualifying on Saturday have all been pushed back while Sunday’s schedule remains largely unchanged.
Session lengths for the two Practice outings and each element of Qualifying on Saturday and Sunday remain unchanged.
Supercars will be supported by Porsche Paynter Dixon Carrera Cup Australia, the VHT S5000 Australian Drivers’ Championship, and Heritage Revival.
Heat 1 and Heat 2 of S5000 have been extended from 14 laps to 16 laps while the Main Event is up from 18 laps to 20 laps.
Shane van Gisbergen comes into the second event of 2021 as the championship leader on 300 points after a sweep of the season-opening Mount Panorama 500, although he heads to the Melbourne circuit under an injury cloud.
The Red Bull Ampol Racing driver is followed by Mobil 1 Appliances Online driver Chaz Mostert on 267 points while Irwin Racing’s Mark Winterbottom lies third with 231 points to his name.
The Sandown SuperSprint at Sandown International Motor Raceway takes place across March 20-21.
Schedule: Sandown SuperSprint, Sandown International Motor Raceway
| Start | End | Category | Session | |
| Saturday, March 20 | ||||
| 8:20 | 8:40 | Heritage Revival | Practice 1 | |
| 8:50 | 9:10 | Porsche Carrera Cup Australia | Practice 1 | |
| 9:20 | 9:50 | Supercars Championship | Practice 1 | |
| 10:00 | 10:20 | S5000 | Practice 1 | |
| 10:30 | 10:50 | Porsche Carrera Cup Australia | Practice 2 | |
| 11:00 | 11:20 | Heritage Revival | Practice 2 | |
| 11:30 | 12:00 | Supercars Championship | Practice 2 | |
| 12:10 | 12:30 | S5000 | Practice 2 | |
| 12:40 | 13:00 | Porsche Carrera Cup Australia | Qualifying | |
| 13:10 | 13:30 | Heritage Revival | Race 1 | 12 laps or 1 lap after 13:28 |
| 13:45 | 13:55 | Supercars Championship | Qualifying Part 1 – Race 3 | |
| 14:00 | 14:10 | Supercars Championship | Qualifying Part 2 – Race 3 | |
| 14:15 | 14:25 | Supercars Championship | Qualifying Part 3 – Race 3 | |
| 14:40 | 14:55 | S5000 | Qualifying | |
| 15:05 | 15:25 | Heritage Revival | Race 2 | 12 laps or 1 lap after 15:23 |
| 15:35 | 16:00 | Porsche Carrera Cup Australia | Race 1 | 18 laps or 1 lap after 15:58 |
| 16:45 | Supercars Championship | Race 3 | 36 laps or 1 lap after 17:43 | |
| Sunday, March 21 | ||||
| 9:25 | 9:45 | S5000 | Heat 1 | 16 laps or 1 lap after 9:43 |
| 9:55 | 10:15 | Heritage Revival | Race 2 | 12 laps or 1 lap after 10:13 |
| 10:30 | 10:40 | Supercars Championship | Qualifying – Race 4 | |
| 10:50 | 11:00 | Supercars Championship | Qualifying – Race 5 | |
| 11:15 | 11:35 | S5000 | Heat 2 | 16 laps or 1 lap after 11:33 |
| 11:45 | 12:05 | Heritage Revival | Race 4 | 12 laps or 1 lap after 12:03 |
| 12:15 | 12:55 | Porsche Carrera Cup Australia | Race 2 | 30 laps or 1 lap after 12:58 |
| 13:25 | Supercars Championship | Race 4 | 36 laps or 1 lap after 14:28 | |
| 14:45 | 15:10 | S5000 | Main Event | 20 laps or 1 lap after 15:08 |
| 15:20 | 15:45 | Porsche Carrera Cup Australia | Race 3 | 18 laps or 1 lap after 15:43 |
| 16:30 | Supercars Championship | Race 5 | 36 laps or 1 lap after 17:28 | |
