First 1 in each heat and next 6 fastest progress to the final.
| Place | Centre | Result | ||
|---|---|---|---|---|
| 1 | Eastern Districts A | 53.74 | Q | |
| 2 | Western Athletics A | 54.52 | q | |
| 3 | Golden Grove A | 56.61 | q | |
| 4 | Plympton A | 57.36 | q | |
| 5 | Enfield B | 57.82 | ||
| Gawler A | SCR |
| Place | Centre | Result | ||
|---|---|---|---|---|
| 1 | Salisbury A | 52.80 | Q | |
| 2 | Enfield A | 54.04 | q | |
| 3 | Lyndoch & Districts A | 55.72 | q | |
| 4 | Salisbury B | 57.81 | q | |
| 5 | Enfield C | 1:03.10 | ||
| Southern Hills A | DNS |
| Place | Centre | Result | ||
|---|---|---|---|---|
| 1 | Salisbury A | 52.80 | Q | |
| 2 | Eastern Districts A | 53.74 | Q | |
| 3 | Enfield A | 54.04 | q | |
| 4 | Western Athletics A | 54.52 | q | |
| 5 | Lyndoch & Districts A | 55.72 | q | |
| 6 | Golden Grove A | 56.61 | q | |
| 7 | Plympton A | 57.36 | q | |
| 8 | Salisbury B | 57.81 | q | |
| 9 | Enfield B | 57.82 | ||
| 10 | Enfield C | 1:03.10 | ||
| Gawler A | SCR | |||
| Southern Hills A | DNS |