| Boy's 10 years 100m Backstroke |
| Final |
|
Time |
Name |
Club |
Age |
FINA PS |
Splits |
Ranking |
|
1. |
1:41.44 |
Nathan A |
Mandurah |
10 |
108 |
Splits |
|
|
2. |
1:53.87 |
Withheld W |
South Shore |
10 |
76 |
Splits |
|
|
3. |
1:57.16 |
Felix C |
South Shore |
10 |
70 |
Splits |
|
| Boy's 11 years 100m Backstroke |
| Final |
|
Time |
Name |
Club |
Age |
FINA PS |
Splits |
Ranking |
 |
1. |
1:23.13 |
Sam E |
Westside Christ Church Aquatic |
11 |
196 |
Splits |
|
 |
2. |
1:31.67 |
Withheld W |
Peel Aquatic |
11 |
146 |
Splits |
|
| Boy's 12 years 100m Backstroke |
| Final |
|
Time |
Name |
Club |
Age |
FINA PS |
Splits |
Ranking |
 |
1. |
1:13.10 |
Kritchum Joseph Cay C |
Arena |
12 |
289 |
Splits |
|
|
2. |
1:14.91 |
Jack H |
Arena |
12 |
268 |
Splits |
|
|
3. |
1:16.37 |
Ethan N |
Arena |
12 |
253 |
Splits |
|
|
4. |
1:22.14 |
Ethan C |
Arena |
12 |
203 |
Splits |
|
 |
5. |
1:22.93 |
Jeremy Z |
South Shore |
12 |
197 |
Splits |
|
 |
6. |
1:23.66 |
Samuel F |
Westside Christ Church Aquatic |
12 |
192 |
Splits |
|
|
7. |
1:33.12 |
Cooper G |
Australind |
12 |
139 |
Splits |
|
| Boy's 13 years 100m Backstroke |
| Final |
|
Time |
Name |
Club |
Age |
FINA PS |
Splits |
Ranking |
 |
1. |
1:12.08 |
Theo T |
All Saints' |
13 |
301 |
Splits |
|
| Boy's 14 years 100m Backstroke |
| Final |
|
Time |
Name |
Club |
Age |
FINA PS |
Splits |
Ranking |
|
1. |
1:11.75 |
Ethan M |
Rockingham |
14 |
305 |
Splits |
|
| Boy's 9 years 100m Backstroke |
| Final |
|
Time |
Name |
Club |
Age |
FINA PS |
Splits |
Ranking |
 |
1. |
1:29.37 |
Zayn A |
Southside Penrhos Wesley SC In |
9 |
158 |
Splits |
|
 |
2. |
1:35.60 |
Noah L |
Surge Swimming Club Inc |
9 |
129 |
|
|
 |
3. |
1:38.23 |
James P |
South Shore |
9 |
119 |
Splits |
|
 |
4. |
1:38.32 |
Salvador G |
Rockingham |
9 |
118 |
Splits |
|
|
5. |
1:49.21 |
Eric P |
Surge Swimming Club Inc |
8 |
86 |
Splits |
|
| Men's 15 years and over 100m Backstroke |
| Final |
|
Time |
Name |
Club |
Age |
FINA PS |
Splits |
Ranking |
 |
1. |
1:00.71 |
Jack K |
Highlanders |
15 |
504 |
Splits |
|
|
2. |
1:11.02 |
Withheld W |
All Saints' |
16 |
315 |
Splits |
|