| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Lebed, Alex (18)
|
MAUN |
52.28 |
53.01 |
0.73 |
| 2 |
Riddle, Sean T (17)
|
MALVA |
53.12 |
54.88 |
1.76 |
| 3 |
Mackensen, Henry D (17)
|
MACBST |
53.81 |
55.97 |
2.16 |
| 4 |
Hanlon, Collin J (15)
|
MATHY |
58.20 |
57.00 |
-1.20 |
| 5 |
Venables, Travis J (17)
|
MATHY |
55.38 |
57.64 |
2.26 |
| 6 |
LaSelva, Jarod M (17)
|
MALVA |
53.37 |
58.00 |
4.63 |
| 7 |
Zhugayevich, Andrew T (17)
|
MACBST |
58.29 |
58.12 |
-0.17 |
| 8 |
Jordan, Aaron T (17)
|
MACBST |
55.36 |
58.26 |
2.90 |
| 9 |
Mastrangelo, Brett M (15)
|
MASSC |
56.37 |
58.30 |
1.93 |
| 10 |
Evans, Andrew L (17)
|
MACBST |
58.68 |
58.55 |
-0.13 |
| 11 |
Chen, Steven J (16)
|
MASSC |
56.17 |
59.28 |
3.11 |
| 12 |
Killion, Connor M (15)
|
MACBST |
54.51 |
59.74 |
5.23 |
| 13 |
Hendricks, Jarrod R (17)
|
MALVA |
56.85 |
1:00.04 |
3.19 |
| 14 |
Coghlan, Brien (15)
|
MALMAC |
1:00.36 |
1:00.15 |
-0.21 |
| 15 |
Duffy, Liam J (15)
|
MACBST |
1:00.19 |
1:00.17 |
-0.02 |
| 16 |
Washington, Evan R (15)
|
MACBST |
|
1:00.37 |
- |
| 17 |
Watlington, Shjon D (17)
|
MALVA |
56.81 |
1:00.56 |
3.75 |
| 18 |
Millar, Riccardo S (16)
|
MALMAC |
1:04.64 |
1:00.77 |
-3.87 |
| 19 |
Stack, Christopher R (17)
|
MACBST |
1:02.87 |
1:00.82 |
-2.05 |
| 20 |
Nadel, Connor (15)
|
MATHY |
1:04.90 |
1:01.73 |
-3.17 |
| 21 |
Barmes, Eric P (16)
|
MAUN |
59.99 |
1:02.63 |
2.64 |
| 22 |
Vinokurov, Dennis A (15)
|
MATHY |
|
1:06.04 |
- |
| 23 |
Brown, David A (17)
|
MALVA |
1:05.89 |
1:06.83 |
0.94 |
| 24 |
Bissell, Theo R (15)
|
MALVA |
1:04.51 |
1:07.66 |
3.15 |
| 25 |
Maul, Matthew G (17)
|
MATHY |
1:07.28 |
1:10.37 |
3.09 |
| 26 |
Watlington, Troy W (15)
|
MALVA |
1:22.50 |
1:13.43 |
-9.07 |
| 27 |
Higley, Braxton M (15)
|
MANPAC |
1:11.32 |
1:15.82 |
4.50 |
|
Brown, Oliver M (15)
|
MARAD |
1:05.76 |
DQ |
- |
|
McCormick, Branden M (15)
|
MATHY |
59.50 |
NS |
- |