First 1 in each heat and next 6 fastest progress to the final.
| Place | Centre | Result | ||
|---|---|---|---|---|
| 1 | Enfield A | 56.58 | Q | |
| 2 | Plympton A | 56.62 | q | |
| 3 | Golden Grove A | 57.97 | q | |
| 4 | Enfield B | 1:00.84 | q | |
| 5 | Port Adelaide A | 1:01.17 | ||
| 6 | Western Athletics B | 1:02.87 | ||
| 7 | Mt Barker B | 1:04.20 |
| Place | Centre | Result | ||
|---|---|---|---|---|
| 1 | Salisbury A | 57.64 | Q | |
| 2 | Western Athletics A | 58.46 | q | |
| 3 | Mt Barker A | 58.56 | q | |
| 4 | Eastern Districts A | 1:00.96 | q | |
| 5 | Gawler A | 1:01.00 | ||
| 6 | Hills A | 1:02.70 | ||
| 7 | Magill A | 1:02.75 | ||
| Plympton B | SCR |
| Place | Centre | Result | ||
|---|---|---|---|---|
| 1 | Enfield A | 56.58 | Q | |
| 2 | Salisbury A | 57.64 | Q | |
| 3 | Plympton A | 56.62 | q | |
| 4 | Golden Grove A | 57.97 | q | |
| 5 | Western Athletics A | 58.46 | q | |
| 6 | Mt Barker A | 58.56 | q | |
| 7 | Enfield B | 1:00.84 | q | |
| 8 | Eastern Districts A | 1:00.96 | q | |
| 9 | Gawler A | 1:01.00 | ||
| 10 | Port Adelaide A | 1:01.17 | ||
| 11 | Hills A | 1:02.70 | ||
| 12 | Magill A | 1:02.75 | ||
| 13 | Western Athletics B | 1:02.87 | ||
| 14 | Mt Barker B | 1:04.20 | ||
| Plympton B | SCR |