First 1 in each heat and next 6 fastest progress to the final.
| Place | Centre | Result | ||
|---|---|---|---|---|
| 1 | Eastern Districts A | 59.90 | Q | |
| 2 | Western Athletics B | 1:00.59 | q | |
| 3 | Plympton A | 1:00.68 | q | |
| 4 | Mt Barker A | 1:03.36 | q | |
| 5 | Tea Tree Gully A | 1:05.92 | ||
| 6 | Enfield B | 1:07.80 | ||
| 7 | Gawler A | 1:14.44 |
| Place | Centre | Result | ||
|---|---|---|---|---|
| 1 | Western Athletics A | 56.66 | Q | |
| 2 | Enfield A | 1:01.54 | q | |
| 3 | Eastern Districts B | 1:01.55 | q | |
| 4 | Port Adelaide A | 1:02.10 | q | |
| 5 | Southern Hills A | 1:05.49 | ||
| 6 | South Coast A | 1:08.77 | ||
| 7 | Plympton B | 1:09.18 |
| Place | Centre | Result | ||
|---|---|---|---|---|
| 1 | Western Athletics A | 56.66 | Q | |
| 2 | Eastern Districts A | 59.90 | Q | |
| 3 | Western Athletics B | 1:00.59 | q | |
| 4 | Plympton A | 1:00.68 | q | |
| 5 | Enfield A | 1:01.54 | q | |
| 6 | Eastern Districts B | 1:01.55 | q | |
| 7 | Port Adelaide A | 1:02.10 | q | |
| 8 | Mt Barker A | 1:03.36 | q | |
| 9 | Southern Hills A | 1:05.49 | ||
| 10 | Tea Tree Gully A | 1:05.92 | ||
| 11 | Enfield B | 1:07.80 | ||
| 12 | South Coast A | 1:08.77 | ||
| 13 | Plympton B | 1:09.18 | ||
| 14 | Gawler A | 1:14.44 |