| 排名 | 組數 | 水道 | 單 位 | 姓 名 | 成 績 | 分段時間 | 晉 級 | 備 註 |
| 1 | 3 | 4 | 新北市 | 1031 卓承齊 | 04:37.70 | RT:; 50M:28.66, 100M:1:01.06, 150M:1:36.76, 200M:2:11.20, 250M:2:52.51, 300M:3:33.10, 350M:4:06.40, 400M:4:37.70 | 水道：4 | |
| 2 | 2 | 4 | 臺中市 | 1040 王星皓 | 04:37.78 | RT:; 50M:28.11, 100M:1:00.32, 150M:1:36.44, 200M:2:12.54, 250M:2:52.43, 300M:3:32.50, 350M:4:05.56, 400M:4:37.78 | 水道：5 | |
| 3 | 1 | 5 | 新北市 | 1024 温仁豪 | 04:43.08 | RT:; 50M:27.87, 100M:1:01.21, 150M:1:38.64, 200M:2:15.45, 250M:2:55.99, 300M:3:36.35, 350M:4:10.89, 400M:4:43.08 | 水道：3 | |
| 4 | 3 | 5 | 臺中市 | 1042 徐佳宸 | 04:44.00 | RT:; 50M:29.45, 100M:1:03.00, 150M:1:38.80, 200M:2:14.05, 250M:2:55.79, 300M:3:37.13, 350M:4:10.90, 400M:4:44.00 | 水道：6 | |
| 5 | 1 | 3 | 桃園市 | 1086 彭鈺棠 | 04:44.07 | RT:; 50M:28.19, 100M:1:00.15, 150M:1:38.04, 200M:2:15.85, 250M:2:56.95, 300M:3:38.58, 350M:4:11.90, 400M:4:44.07 | 水道：2 | |
| 6 | 2 | 3 | 高雄市 | 1072 施信毅 | 04:45.77 | RT:; 50M:28.55, 100M:1:01.43, 150M:1:37.81, 200M:2:13.15, 250M:2:55.88, 300M:3:38.60, 350M:4:12.88, 400M:4:45.77 | 水道：7 | |
| 7 | 1 | 4 | 花蓮縣 | 1138 朱晨愷 | 04:47.10 | RT:; 50M:29.28, 100M:1:04.22, 150M:1:41.52, 200M:2:17.67, 250M:2:57.96, 300M:3:38.01, 350M:4:13.04, 400M:4:47.10 | 水道：1 | |
| 8 | 2 | 6 | 高雄市 | 1067 鍾皓尹 | 04:51.48 | RT:; 50M:30.32, 100M:1:04.82, 150M:1:41.60, 200M:2:17.76, 250M:3:02.17, 300M:3:45.27, 350M:4:19.82, 400M:4:51.48 | 水道：8 | |
| 9 | 3 | 3 | 臺北市 | 1013 華啟宸 | 04:56.98 | RT:; 50M:27.96, 100M:1:00.97, 150M:1:40.24, 200M:2:19.16, 250M:3:01.67, 300M:3:45.39, 350M:4:21.60, 400M:4:56.98 | | |
| 10 | 1 | 2 | 雲林縣 | 1119 楊子慶 | 05:01.72 | RT:; 50M:28.66, 100M:1:01.31, 150M:1:43.66, 200M:2:25.47, 250M:3:10.09, 300M:3:55.46, 350M:4:30.23, 400M:5:01.72 | | |
| 11 | 1 | 6 | 屏東縣 | 1122 陳 暉 | 05:02.65 | RT:; 50M:30.68, 100M:1:07.66, 150M:1:48.70, 200M:2:28.02, 250M:3:12.49, 300M:3:56.90, 350M:4:31.77, 400M:5:02.65 | | |
| 12 | 3 | 2 | 桃園市 | 1095 賴績證 | 05:04.74 | RT:; 50M:30.45, 100M:1:05.89, 150M:1:44.51, 200M:2:23.06, 250M:3:06.89, 300M:3:51.48, 350M:4:28.44, 400M:5:04.74 | | |
| 13 | 3 | 6 | 新竹市 | 1156 李律呈 | 05:06.42 | RT:; 50M:31.53, 100M:1:06.95, 150M:1:47.50, 200M:2:27.45, 250M:3:09.61, 300M:3:51.75, 350M:4:29.70, 400M:5:06.42 | | |
| 14 | 2 | 2 | 新竹市 | 1151 許哲瑜 | 05:08.40 | RT:; 50M:30.24, 100M:1:05.21, 150M:1:45.67, 200M:2:26.09, 250M:3:11.09, 300M:3:57.53, 350M:4:34.13, 400M:5:08.40 | | |
| 15 | 2 | 5 | 臺北市 | 1008 王冠閎 | 05:10.48 | RT:; 50M:28.31, 100M:1:00.46, 150M:1:42.11, 200M:2:23.40, 250M:3:08.55, 300M:3:54.22, 350M:4:33.26, 400M:5:10.48 | | |
| 16 | 2 | 7 | 臺南市 | 1051 洪郁珉 | 05:16.19 | RT:; 50M:31.35, 100M:1:07.22, 150M:1:47.67, 200M:2:27.09, 250M:3:11.95, 300M:3:59.07, 350M:4:38.01, 400M:5:16.19 | | |
| 17 | 3 | 7 | 臺南市 | 1048 陳至恩 | 05:16.69 | RT:; 50M:31.39, 100M:1:08.69, 150M:1:49.84, 200M:2:29.53, 250M:3:16.45, 300M:4:04.03, 350M:4:41.73, 400M:5:16.69 | | |