First 3 in each heat and next 2 fastest progress to the final.
| Place | Centre | Result | ||
|---|---|---|---|---|
| 1 | Western Athletics A | 1:12.16 | Q | |
| 2 | Eastern Districts B | 1:14.84 | Q | |
| 3 | Enfield A | 1:15.35 | Q | |
| 4 | Southern Hills A | 1:16.18 | q | |
| 5 | Tea Tree Gully A | 1:18.55 | ||
| 6 | Mt Barker A | 1:18.83 | ||
| Plympton A | DQ | TR24.7 | ||
| Gawler/Magill B | DNS |
| Place | Centre | Result | ||
|---|---|---|---|---|
| 1 | Eastern Districts A | 1:12.33 | Q | |
| 2 | Port Adelaide A | 1:15.25 | Q | |
| 3 | Adelaide Harriers/Eastern Dist A | 1:15.44 | Q | |
| 4 | Western Athletics C | 1:17.26 | q | |
| 5 | Western Athletics B | 1:19.01 | ||
| 6 | Plympton B | 1:19.27 | ||
| 7 | Salisbury A | 1:21.89 | ||
| 8 | Magill A | 1:22.56 | ||
| 9 | Northern Districts A | 1:24.98 |
| Place | Centre | Result | ||
|---|---|---|---|---|
| 1 | Western Athletics A | 1:12.16 | Q | |
| 2 | Eastern Districts A | 1:12.33 | Q | |
| 3 | Eastern Districts B | 1:14.84 | Q | |
| 4 | Port Adelaide A | 1:15.25 | Q | |
| 5 | Enfield A | 1:15.35 | Q | |
| 6 | Adelaide Harriers/Eastern Dist A | 1:15.44 | Q | |
| 7 | Southern Hills A | 1:16.18 | q | |
| 8 | Western Athletics C | 1:17.26 | q | |
| 9 | Tea Tree Gully A | 1:18.55 | ||
| 10 | Mt Barker A | 1:18.83 | ||
| 11 | Western Athletics B | 1:19.01 | ||
| 12 | Plympton B | 1:19.27 | ||
| 13 | Salisbury A | 1:21.89 | ||
| 14 | Magill A | 1:22.56 | ||
| 15 | Northern Districts A | 1:24.98 | ||
| Plympton A | DQ | TR24.7 | ||
| Gawler/Magill B | DNS |