| Place | Time | Swimmer (Grade) | School | City | State |
| 1 | :47.08 | Sean Fletcher (12) | James Madison High School | Vienna | VA |
| 2 | :47.55 | Tom Shields (12) | Edison High School | Huntington Beach | CA |
| 3 | :47.61 | Timothy Phillips (12) | Parkersburg High School | Parkersburg | WV |
| 4 | :47.81 | Cody Roberts (12) | Richland High School | Richland | WA |
| 5 | :47.85 | Kyle Whitaker (11) | Chesterton High School | Chesterton | IN |
| 6 | :47.87 | John Wojciechowski (11) | Brophy College Preparatory | Phoenix | AZ |
| 7 | :48.03 | Chase Bloch (11) | Oaks Christian High School | Westlake Village | CA |
| 8 | :48.13 | Gregory Mahon (12) | St. Joseph's Preparatory School | Philadelphia | PA |
| 9 | :48.16 | Spencer Hamby (12) | Granite Bay High School | Granite Bay | CA |
| 10 | :48.18 | Kevin Behrens (10) | Munster High School | Munster | IN |
| 11 | :48.19 | Mike Dominski (12) | New Trier High School | Winnetka | IL |
| 12 | :48.20 | Austin Brown (12) | Redlands High School | Redlands | CA |
| 12 | :48.20 | David Laflamme (12) | Beyer High School | Modesto | CA |
| 14 | :48.37 | Thomas Luchsinger (12) | Mt. Sinai High School | Mt. Sinai | NY |
| 15 | :48.38 | Max Horrell (12) | Analy High School | Sebastopol | CA |
| 15 | :48.38 | Paul Leonhardt (11) | Plano Senior High School | Plano | TX |
| 15 | :48.38 | Kyler Vanswol (11) | Lincoln-Way North High School | Frankfort | IL |
| 18 | :48.42 | Matt Voell (12) | Cherry Creek High School | Englewood | CO |
| 19 | :48.45 | Matt Murray (12) | Saratoga High School | Saratoga | CA |
| 20 | :48.46 | Cole Cragin (12) | Friendswood High School | Friendswood | TX |
| 21 | :48.56 | Kevin Marsteller (12) | York Suburban High School | York | PA |
| 22 | :48.62 | Alex Ward (11) | Webb School of Knoxville | Knoxville | TN |
| 23 | :48.65 | Andrew Kosic (10) | West Chester Henderson High School | West Chester | PA |
| 24 | :48.71 | Brady Fox (12) | Georgetown Prep | N. Behtesda | MD |
| 25 | :48.82 | Marcus Guttmann (12) | Albuquerque Academy | Albuquerque | NM |
| 25 | :48.82 | Giles Smith (12) | McDonogh School | Owings Mills | MD |
| 27 | :48.86 | Jack Lane (10) | Lakeside High School | Atlanta | GA |
| 28 | :48.92 | Ryan Bubb (11) | Lincoln East High School | Lincoln | NE |
| 28 | :48.92 | Spencer DiDio (12) | Carlsbad High School | Carlsbad | CA |
| 28 | :48.92 | Greg Roop (12) | The Baylor School | Chattanooga | TN |
| 31 | :48.98 | Ellis Miller (11) | Siloam Springs High School | Siloam Springs | AR |
| 32 | :49.05 | Jacob Jarzen (12) | Jacksonville High School | Jacksonville | IL |
| 33 | :49.07 | Piankhi Gibson (11) | Acalanes High School | Lafayette | CA |
| 34 | :49.11 | Byron Butler (12) | New Berlin West High School | New Berlin | WI |
| 35 | :49.19 | Cody Brunette (11) | Juneau-Douglas High School | Juneau | AK |
| 36 | :49.22 | Nimrod Hayet (11) | Peddie School | Hightstown | NJ |
| 37 | :49.29 | Mike Smith (12) | Hinsdale Central High School | Hinsdale | IL |
| 38 | :49.33 | Erich Peske (10) | Los Gatos High School | Los Gatos | CA |
| 39 | :49.36 | Kendrick Bachman (12) | John Marshall High School | Rochester | MN |
| 40 | :49.38 | Cameron Martin (12) | Clearwater Central Catholic | Clearwater | FL |
| 41 | :49.40 | Dan Wickensheimer (12) | Stockdale High School | Bakersfield | CA |
| 42 | :49.48 | Sandy Whitaker (11) | St. Charles Prep School | Columbus | OH |
| 43 | :49.55 | Mark Waugh (11) | North Allegheny High School | Wexford | PA |
| 44 | :49.61 | Matthew Schwippert (12) | Iroquois Central High School | Elma | NY |
| 45 | :49.62 | Nick Schuttinger (11) | St. Charles Prep School | Columbus | OH |
| 46 | :49.69 | Alex Seward (12) | Churchill High School | San Antonio | TX |
| 47 | :49.72 | Collin Kaden (12) | Atascocita High School | Humble | TX |
| 48 | :49.73 | Tripp Cooper (10) | The Woodlands High School | The Woodlands | TX |
| 49 | :49.75 | Stuart Ferguson (12) | The Collegiate School | Richmond | VA |
| 49 | :49.75 | James McNamara (11) | Harvard-Westlake School | North Hollywood | CA |
| 49 | :49.75 | David Nolan (10) | Hershey High School | Hershey | PA |
| 52 | :49.77 | Josh Geschwendt (12) | Zeeland Public Schools | Zeeland | MI |
| 52 | :49.77 | Kevin Meisner (11) | Akron Firestone High School | Akron | OH |
| 54 | :49.78 | Coy Bryant (12) | Texas High School | Texarkana | TX |
| 55 | :49.82 | Andrew Chin (12) | Harker School | San Jose | CA |
| 55 | :49.82 | Daniel Sweeney (12) | New Canaan High School | New Canaan | CT |
| 57 | :49.87 | Maclin Simpson (12) | St. Xavier High School | Louisville | KY |
| 58 | :49.88 | Tom Casey (12) | Suffield Academy | Suffield | CT |
| 58 | :49.88 | Garrett Mulchrone (12) | St. Ignatius College Prep | Chicago | IL |
| 60 | :49.89 | Connor McCarroll (12) | Jesuit High School | Portland | OR |
| 61 | :49.90 | Seth Stubblefield (10) | Plano Senior High School | Plano | TX |
| 62 | :49.92 | Ayman Andrews (12) | Vernon Township High School | Vernon | NJ |
| 62 | :49.92 | Dominick Glavich (10) | Green Hope High School | Cary | NC |
| 62 | :49.92 | Zane Grothe (11) | Boulder City High School | Boulder City | NV |
| 65 | :49.94 | Lucas Koenig (12) | Wausau East High School | Wausau | WI |
| 66 | :49.95 | Luis Rodriguez (12) | North Allegheny High School | Wexford | PA |
| 67 | :49.97 | Matt Hurko (12) | Leigh High School | San Jose | CA |
| 68 | :50.00 | Maclin Davis (9 ) | Montgomery Bell Academy | Nashville | TN |
| 68 | :50.00 | Logan Mosley (12) | Seminole High School | Sanford | FL |
| 70 | :50.01 | Steven Gasparini (11) | Cumberland Valley High School | Mechanicsburg | PA |
| 70 | :50.01 | Karl Mayer (12) | Delbarton School | Morristown | NJ |
| 70 | :50.01 | Henry Scott (11) | Columbia High School | Maplewood | NJ |
| 73 | :50.03 | Travis Schieman (11) | Centerville High School | Centerville | OH |
| 74 | :50.05 | Stephen Czaja (12) | Boca Raton High School | Boca Raton | FL |
| 74 | :50.05 | Alec LaMothe (12) | North Central High School | Indianapolis | IN |
| 76 | :50.06 | Bart Kelly (12) | Murrieta Valley High School | Murrieta | CA |
| 76 | :50.06 | Brian Kiel (11) | Rochester Century High School | Rochester | MN |
| 76 | :50.06 | Roger Meisfeld (11) | Catalina Foothills High School | Tucson | AZ |
| 76 | :50.06 | James Wells (11) | Morse High School | Bath | ME |
| 80 | :50.09 | Matthew Ellis (9 ) | Westlake High School | Austin | TX |
| 81 | :50.14 | John Williamson (10) | University High School | Normal | IL |
| 82 | :50.15 | Jacob Hanson (12) | Normal Community High School | Normal | IL |
| 83 | :50.16 | Ryan Cutter (12) | Westhill High School | Stamford | CT |
| 83 | :50.16 | Michael Hart (12) | Lakota West High School | West Chester | OH |
| 85 | :50.19 | Eric Huffman (12) | Upper Arlington High School | Columbus | OH |
| 86 | :50.20 | Timmy Romano (11) | The Bolles School | Jacksonville | FL |
| 87 | :50.24 | Alwin Firmansyah (10) | Cerritos High School | Cerritos | CA |
| 87 | :50.24 | Murray Longbotham (12) | Mercer Island High School | Mercer Island | WA |
| 87 | :50.24 | Geramiah Simoes (12) | Iolani School | Honolulu | HI |
| 90 | :50.25 | Bryce Bohman (12) | Moline High School | Moline | IL |
| 91 | :50.27 | Christopher Cirillo (12) | Warwick High School | Newport News | VA |
| 91 | :50.27 | Nick Deaver (10) | Miramonte High School | Orinda | CA |
| 93 | :50.33 | Ryker Saunders (11) | Battle Ground Academy | Franklin | TN |
| 94 | :50.35 | Alex Higginbotham (12) | Valley Christian High School | San Jose | CA |
| 95 | :50.36 | Robbie Norton (12) | Radnor High School | Wayne | PA |
| 96 | :50.39 | Adam Andrew McKenzie (11) | Riverside High School | Durham | NC |
| 96 | :50.39 | Rohan Patnaik (11) | Saint Francis High School | Mountain View | CA |
| 98 | :50.40 | Danny Nguyen (12) | Brookwood High School | Snellville | GA |
| 98 | :50.40 | Carl Svagerko (12) | St. Francis DeSales High School | Columbus | OH |
| 100 | :50.43 | Ben Utesch (12) | Ames High School | Ames | IA |
| 101 | :50.47 | Chris Depew (12) | Naperville Central High School | Naperville | IL |
| 101 | :50.47 | John Van Dyke (11) | Tri-West Hendricks High School | Lizton | IN |
| 103 | :50.49 | David Linden (12) | Newport Harbor High School | Newport Beach | CA |
| 104 | :50.50 | Brian Dailey-Ardnt (11) | Cretin-Derham Hall | St. Paul | MN |
| 104 | :50.50 | Wesley Mullins (12) | Peddie School | Hightstown | NJ |
| 104 | :50.50 | Christian Riess (11) | Isidore Newman School | New Orleans | LA |
| 107 | :50.51 | Thomas Elling (11) | Burnsville High School | Burnsville | MN |
| 107 | :50.51 | Michael Miller (10) | Beechwood High School | Fort Mitchell | KY |
| 109 | :50.53 | Clifton Gordon (10) | Salesianum School | Wilmington | DE |
| 109 | :50.53 | Jacob McGough (11) | Clovis West High School | Fresno | CA |
| 109 | :50.53 | Dylan M. Wolf (9 ) | Spring Valley High School | Las Vegas | NV |
| 112 | :50.54 | Byron Gruendl (12) | San Ramon Valley High School | Danville | CA |
| 113 | :50.55 | Bradley Louie (10) | Armijo High School | Fairfield | CA |
| 114 | :50.56 | Wesley Trumbauer (11) | Boyertown Area High School | Boyertown | PA |
| 115 | :50.57 | Michael Dugan (11) | Mohonasen-Schalmont Schools | Schenectady | NY |
| 116 | :50.59 | Jonathon Castillo (12) | Gladys Porter High School | Brownsville | TX |
| 117 | :50.61 | Wesley Wheeler (12) | Round Rock High School | Round Rock | TX |
| 118 | :50.63 | Jack Poletto (12) | Waubonsie Valley High School | Aurora | IL |
| 118 | :50.63 | Kyle Workman (10) | Stagg High School | Palos Hills | IL |
| 120 | :50.64 | Chris Clark (12) | St. George's Independent School | Collierville | TN |
| 120 | :50.64 | Blake Johnson (10) | Homestead High School | Fort Wayne | IN |
| 122 | :50.65 | Ben Rafalski (12) | Gresham High School | Gresham | OR |
| 123 | :50.66 | Tanner Kurz (9 ) | Delaware Military Academy | Wilmington | DE |
| 124 | :50.67 | Mitch Taylor (12) | Johnston High School | Johnston | IA |
| 125 | :50.68 | Nicholas Han (12) | Grapevine High School | Grapevine | TX |
| 126 | :50.69 | Dalton Anderson (12) | Elkhorn Area High School | Elkhorn | WI |
| 126 | :50.69 | Spencer Bard (12) | Bearden High School | Knoxville | TN |
| 126 | :50.69 | Peter Edwards (12) | North Hills Senior High School | Pittsburgh | PA |
| 126 | :50.69 | Andy Vazquez (10) | Belen Jesuit Prep School | Miami | FL |
| 130 | :50.70 | Ryan Arata (9 ) | Lewis-Palmer High School | Monument | CO |
| 131 | :50.71 | Eric Naylor (12) | Dover Area High School | Dover | PA |
| 132 | :50.72 | Joe Glowacki (12) | Cathedral Prep | Erie | PA |
| 133 | :50.73 | Christopher Weber (12) | William S. Hart High School | Newhall | CA |
| 134 | :50.74 | Sean Grier (11) | Hershey High School | Hershey | PA |
| 135 | :50.75 | Justin Hastings (12) | Cheyenne East High School | Cheyenne | WY |
| 135 | :50.75 | Greg Pelton (12) | Loyola Blakefield | Towson | MD |
| 137 | :50.78 | Jimmy Chapman (12) | Perkins High School | Sandusky | OH |
| 137 | :50.78 | Steven Edgar (12) | Ventura High School | Ventura | CA |
| 137 | :50.78 | Matthew L. Millikin (12) | Carlynton High School | Carnegie | PA |
| 140 | :50.79 | Dakota Wheeler (11) | Westmoore High School | Moore | OK |
| 141 | :50.80 | Adam Otaki (12) | McIntosh High School | Peachtree City | GA |
| 141 | :50.80 | Dustin Rhoads (11) | Ottumwa High School | Ottumwa | IA |
| 143 | :50.81 | Shaun Stringer (12) | Las Lomas High School | Walnut Creek | CA |
| 144 | :50.85 | Alan Winder (9 ) | Terra Linda High School | San Rafael | CA |
| 145 | :50.86 | Hayden Baker (10) | Farragut High School | Knoxville | TN |
| 145 | :50.86 | Hunter Hinson (11) | Brookwood School | Thomasville | GA |
| 145 | :50.86 | Adam Jorgensen (10) | Roseville High School | Roseville | CA |
| 145 | :50.86 | Kurtis Ratcliff (10) | Westfield High School | Chantilly | VA |
| 145 | :50.86 | Cole Worsley (12) | Moffat County High School | Craig | CO |
| 150 | :50.87 | Wade Allen (10) | Davis Senior High School | Davis | CA |
| 150 | :50.87 | Stephen Meyer (11) | Shorewood High School | Shorewood | WI |
| 150 | :50.87 | Brandon O'Donnell (12) | McFarland High School | McFarland | WI |
| 153 | :50.88 | Dane Stassi (12) | Woodbridge High School | Irvine | CA |
| 154 | :50.89 | Travis Jensen (11) | Leigh High School | San Jose | CA |
| 155 | :50.91 | John Flanagan (12) | Shawnee High School | Medford | NJ |
| 155 | :50.91 | Michael Kinross (12) | Cary-Grove High School | Cary | IL |
| 155 | :50.91 | Michael Millstein (12) | Monte Vista High School | Danville | CA |
| 155 | :50.91 | Sam Rairden (12) | Maggie L. Walker Governor's School | Richmond | VA |
| 159 | :50.92 | Brandon Porter (9 ) | Murrieta Valley High School | Murrieta | CA |