| Place | Time | Swimmer (Grade) | School | City | State |
| 1 | :43.70 | Morgan Henderson-Kunz (12) | Westview High School | Portland | OR |
| 2 | :43.71 | Shayne Fleming (11) | Valley Christian High School | San Jose | CA |
| 3 | :44.06 | Kevin Overholt (12) | Neuqua Valley High School | Naperville | IL |
| 4 | :44.24 | Ryan Hanni (12) | Los Altos High School | Los Altos | CA |
| 5 | :44.27 | Aaron Wayne (12) | Deer Valley High School | Antioch | CA |
| 6 | :44.28 | Sam Hoekstra (12) | Grandville High School | Grandville | MI |
| 6 | :44.28 | Eric Huffman (12) | Upper Arlington High School | Columbus | OH |
| 8 | :44.29 | Giles Smith (12) | McDonogh School | Owings Mills | MD |
| 9 | :44.33 | Kyle Whitaker (11) | Chesterton High School | Chesterton | IN |
| 10 | :44.37 | Andrew Saeta (12) | Polytechnic School | Pasadena | CA |
| 11 | :44.51 | Shane Austin (11) | Unionville High School | Kennett Square | PA |
| 12 | :44.53 | Paul Leonhardt (11) | Plano Senior High School | Plano | TX |
| 13 | :44.54 | Tom Shields (12) | Edison High School | Huntington Beach | CA |
| 14 | :44.61 | Dominik Cubelic (11) | Glenbrook South High School | Glenview | IL |
| 15 | :44.62 | Mitch Stoehr (11) | Lake Forest High School | Lake Forest | IL |
| 16 | :44.66 | Jack Wagner (11) | Holy Trinity Diocesan High School | Hicksville | NY |
| 16 | :44.66 | Ted Walker (12) | LaSalle College High School | Wyndmoor | PA |
| 18 | :44.68 | Hebie Behm (12) | Catalina Foothills High School | Tucson | AZ |
| 19 | :44.71 | Matthew Schlytter (12) | Allen D. Nease High School | Ponte Vedra | FL |
| 20 | :44.73 | T.J. Leon (11) | UMS-Wright Preparatory School | Mobile | AL |
| 21 | :44.77 | Andrew Grinalds (12) | Fairfield College Preparatory School | Fairfield | CT |
| 22 | :44.81 | Matt Thompson (12) | Jesuit College Preparatory School | Dallas | TX |
| 23 | :44.83 | Matt Murray (12) | Saratoga High School | Saratoga | CA |
| 24 | :44.87 | John Wojciechowski (11) | Brophy College Preparatory | Phoenix | AZ |
| 25 | :44.91 | Roman Willets (12) | St. Francis de Sales High School | Toledo | OH |
| 26 | :45.06 | Kevin Marsteller (12) | York Suburban High School | York | PA |
| 27 | :45.07 | Jordan Huff (12) | Dubuque Senior High School | Dubuque | IA |
| 28 | :45.08 | Chris Myers (12) | La Canada High School | La Canada | CA |
| 29 | :45.10 | Nicholas D'Innocenzo (12) | Andover High School | Andover | MA |
| 30 | :45.12 | Nathan Kinney (11) | Hamilton Southeastern High School | Fishers | IN |
| 31 | :45.14 | Blair Schiller (10) | The Bolles School | Jacksonville | FL |
| 32 | :45.15 | Drew Johnson (11) | Edina High School | Edina | MN |
| 33 | :45.16 | Steven Ung (11) | Westview High School | Portland | OR |
| 34 | :45.17 | Matt Hogan (12) | Cranbrook Kingswood High School | Bloomfield Hills | MI |
| 35 | :45.21 | Ben Hinshaw (12) | Saratoga High School | Saratoga | CA |
| 36 | :45.23 | Tommy Gutman (11) | The Bolles School | Jacksonville | FL |
| 36 | :45.23 | Andrew Kosic (10) | West Chester Henderson High School | West Chester | PA |
| 38 | :45.26 | Jacob Hartley (11) | Coronado High School | El Paso | TX |
| 39 | :45.30 | Eric Bruck (12) | Paul Laurence Dunbar High School | Lexington | KY |
| 40 | :45.31 | Hussein Mohamed (12) | Fork Union Military Academy | Fork Union | VA |
| 41 | :45.32 | Clint Johnson (12) | Yucaipa High School | Yucaipa | CA |
| 41 | :45.32 | Billy Kunkel (12) | Omaha Creighton Prep | Omaha | NE |
| 43 | :45.35 | Pieter Kranenburg (12) | St. Ignatius College Preparatory | San Francisco | CA |
| 43 | :45.35 | Austin Wilson (12) | Kingwood High School | Kingwood | TX |
| 45 | :45.36 | John Dalton (12) | Arvada West High School | Arvada | CO |
| 46 | :45.42 | Paschall Davis (12) | Montgomery Bell Academy | Nashville | TN |
| 47 | :45.44 | Tyler Bailey (12) | University School | Hunting Valley | OH |
| 47 | :45.44 | Joe Hladik (12) | Lyons Township High School | LaGrange | IL |
| 47 | :45.44 | Devon Meeks (11) | Rosemount High School | Rosemont | MN |
| 50 | :45.46 | Ben Anderson (10) | Austin High School | Austin | TX |
| 50 | :45.46 | Hunter Cwalinski (12) | Cardinal Gibbons High School | Fort Lauderdale | FL |
| 50 | :45.46 | Josh Geschwendt (12) | Zeeland Public Schools | Zeeland | MI |
| 50 | :45.46 | Jacob Taylor (11) | Mountain Crest High School | Hyrum | UT |
| 54 | :45.47 | Mike Wynalda (11) | Grandville High School | Grandville | MI |
| 55 | :45.50 | Matthew Limerick (12) | The Baylor School | Chattanooga | TN |
| 56 | :45.51 | Mac Anthony (11) | The Collegiate School | Richmond | VA |
| 56 | :45.51 | Niklas Brinck (10) | Nixa High School | Nixa | MO |
| 58 | :45.52 | Marcus Holland (12) | Perris High School | Perris | CA |
| 59 | :45.55 | Eric Chiu (12) | Lakeside High School | Evans | GA |
| 59 | :45.55 | Mark Higgins (12) | Palo Alto High School | Palo Alto | CA |
| 59 | :45.55 | Albert Lloyd (11) | Central High School | Springfield | MO |
| 62 | :45.56 | Jordan Harris (12) | Los Osos High School | Rancho Cucamonga | CA |
| 63 | :45.58 | Sean Fletcher (12) | James Madison High School | Vienna | VA |
| 63 | :45.58 | Joe Stitts (12) | Carlsbad High School | Carlsbad | CA |
| 65 | :45.59 | Josh Jordan (12) | Carmel High School | Carmel | IN |
| 66 | :45.60 | Will Lawley (12) | Saint Xavier High School | Cincinnati | OH |
| 66 | :45.60 | David Sanders (12) | Archbishop Moeller High School | Cincinnati | OH |
| 68 | :45.61 | Burke Sims (12) | Downers Grove North High School | Downers Grove | IL |
| 68 | :45.61 | Eric Solis (11) | Holland High School | Holland | MI |
| 70 | :45.62 | Zachary Holmes (12) | Mirabeau B. Lamar High School | Houston | TX |
| 70 | :45.62 | Matthew Margritier (10) | Rockhurst Jesuit High School | Kansas City | MO |
| 70 | :45.62 | Nick Trowbridge (12) | Mountain View High School | Mountain View | CA |
| 73 | :45.65 | Ben Griggs (12) | Fargo South High School | Fargo | ND |
| 73 | :45.65 | Joe Jeffers (12) | New Trier High School | Winnetka | IL |
| 75 | :45.66 | Brent Curtis (12) | Cary-Grove High School | Cary | IL |
| 76 | :45.67 | Tyler Fozkos (10) | Chesterton High School | Chesterton | IN |
| 77 | :45.69 | Cole Davis (11) | Harker School | San Jose | CA |
| 78 | :45.71 | John McGinley (12) | Malvern Prep School | Malvern | PA |
| 79 | :45.72 | Jacob Johnson (11) | Shenendehowa High School | Clifton Park | NY |
| 79 | :45.72 | Tyler Reed (12) | Palm Harbor University High School | Palm Harbor | FL |
| 81 | :45.73 | Garrett Hehn (11) | Franklin Regional High School | Murrysville | PA |
| 81 | :45.73 | Kevin Vallario (12) | Our Lady of Good Counsel | Olney | MD |
| 83 | :45.74 | Drew Coffin (12) | Zeeland Public Schools | Zeeland | MI |
| 84 | :45.75 | Jake Brown (12) | Flower Mound High School | Flower Mound | TX |
| 84 | :45.75 | Jon Nunez (11) | Fort Myers High School | Ft. Myers | FL |
| 86 | :45.76 | Steven Jameson Hill (11) | Seton School | Manassas | VA |
| 87 | :45.77 | Conner Luster (12) | Damien High School | La Verne | CA |
| 87 | :45.77 | Daniel Tan (11) | Valley Christian High School | San Jose | CA |
| 89 | :45.78 | Alex Burtch (12) | Concord High School | Elkhart | IN |
| 90 | :45.79 | Trevor Hoyt (12) | Yucaipa High School | Yucaipa | CA |
| 91 | :45.82 | Julius Espiritu (12) | Bellarmine College Preparatory | San Jose | CA |
| 92 | :45.83 | Logan Ware (12) | Wadsworth High School | Wadsworth | OH |
| 93 | :45.84 | Danny Brebrick (11) | Wausau East High School | Wausau | WI |
| 94 | :45.85 | Shane Ryan (9 ) | Haverford High School | Havertown | PA |
| 95 | :45.86 | Patrick Ceddia (11) | Cardinal Mooney High School | Sarasota | FL |
| 96 | :45.88 | Thomas Fellowes (11) | Pepper Pike Orange High School | Pepper Pike | OH |
| 96 | :45.88 | Forrest Hughes (12) | Brazosport High School | Freeport | TX |
| 98 | :45.89 | Kevin Wilson (12) | Seton Hall Prep School | West Orange | NJ |
| 99 | :45.90 | Mark Stepanian (12) | Blackhawk High School | Beaver Falls | PA |
| 100 | :45.93 | Andrew Latimer (12) | Tamalpais High School | Mill Valley | CA |
| 100 | :45.93 | Ellis Miller (11) | Siloam Springs High School | Siloam Springs | AR |
| 100 | :45.93 | Andrew Sideras (11) | LaSalle College High School | Wyndmoor | PA |
| 100 | :45.93 | Nick Smith (12) | St. Charles North High School | St. Charles | IL |
| 104 | :45.95 | Trevor Allen (11) | Davis Senior High School | Davis | CA |
| 105 | :45.96 | Elijah Flood (12) | Pine Crest School | Fort Lauderdale | FL |
| 106 | :45.98 | Chase Bloch (11) | Oaks Christian High School | Westlake Village | CA |
| 106 | :45.98 | Jordan Jones (9 ) | Kingwood High School | Kingwood | TX |
| 106 | :45.98 | Brian Kiel (11) | Rochester Century High School | Rochester | MN |
| 106 | :45.98 | Joseph Stanton (9 ) | Kingwood Park High School | Kingwood | TX |
| 110 | :45.99 | Hugh Davison (11) | Loyola Blakefield | Towson | MD |
| 110 | :45.99 | Demetri Karedis (12) | Parkland High School | Allentown | PA |
| 112 | :46.00 | Wade Allen (10) | Davis Senior High School | Davis | CA |
| 112 | :46.00 | Jamie Grennan (12) | Delaware Valley High School | Milford | PA |
| 112 | :46.00 | Josh Samuels (12) | Villa Park High School | Villa Park | CA |
| 115 | :46.03 | Tim Squires (11) | Buckhannon-Upshur High School | Buckhannon | WV |
| 116 | :46.06 | Jeff Cox (12) | Milton High School | Alpharetta | GA |
| 116 | :46.06 | Dan Crigler (11) | Wilson High School | West Lawn | PA |
| 116 | :46.06 | Chris Dominguez (12) | Clovis High School | Clovis | CA |
| 116 | :46.06 | Michael Hallock (12) | Oakton High School | Vienna | VA |
| 116 | :46.06 | Shea Kenny (12) | Cypress Woods High School | Cypress | TX |
| 121 | :46.07 | Ian Burns (9 ) | Saratoga High School | Saratoga | CA |
| 121 | :46.07 | Alex Campbell (11) | La Canada High School | La Canada | CA |
| 123 | :46.08 | Tom Casey (12) | Suffield Academy | Suffield | CT |
| 123 | :46.08 | Nick Dillinger (9 ) | Campbell County High School | Gillette | WY |
| 123 | :46.08 | Greg Roop (12) | The Baylor School | Chattanooga | TN |
| 126 | :46.09 | David Nolan (10) | Hershey High School | Hershey | PA |
| 127 | :46.10 | Mason Chenier (12) | Eastern Wayne High School | Goldsboro | NC |
| 128 | :46.11 | Stefan Knight (10) | La Costa Canyon High School | Carlsbad | CA |
| 129 | :46.12 | David Clark (12) | McCallie School | Chattanooga | TN |
| 130 | :46.13 | Anthony Chiaro (12) | Sahuaro High School | Tucson | AZ |
| 130 | :46.13 | Matt Friede (11) | Sauk Prairie-Wisconsin Heights High School | Prairie du Sac | WI |
| 130 | :46.13 | Luis Rodriguez (12) | North Allegheny High School | Wexford | PA |
| 130 | :46.13 | Pat Sullivan (12) | Gonzaga College High School | Washington, DC | DC |
| 134 | :46.14 | Braden Clarke (12) | Horace Greeley High School | Chappaqua | NY |
| 135 | :46.15 | Jake Lehman (12) | Los Gatos High School | Los Gatos | CA |
| 135 | :46.15 | Sam Niesen (12) | Middleton High School | Middleton | WI |
| 137 | :46.17 | Richard Dunham (12) | Wayzata High School | Plymouth | MN |
| 137 | :46.17 | John Wilson (12) | Carl Sandburg High School | Orland Park | IL |
| 139 | :46.19 | Brian Stevens (10) | Brophy College Preparatory | Phoenix | AZ |
| 140 | :46.20 | Michael Matchett (12) | Dana Hills High School | Dana Point | CA |
| 140 | :46.20 | Tim Wenzlau (12) | Palo Alto High School | Palo Alto | CA |
| 142 | :46.21 | Troy Tillman (11) | Notre Dame High School | Chattanooga | TN |
| 143 | :46.23 | Ian Fisk (11) | Mercer Island High School | Mercer Island | WA |
| 144 | :46.25 | Jonathan Edwards (10) | Cypress Creek High School | Houston | TX |
| 144 | :46.25 | Mark Minowitz (12) | Greenwich High School | Greenwich | CT |
| 146 | :46.26 | Rex Butler (11) | Coronado High School | Coronado | CA |
| 147 | :46.27 | Matthew Ellis (9 ) | Westlake High School | Austin | TX |
| 147 | :46.27 | Alex Seward (12) | Churchill High School | San Antonio | TX |
| 149 | :46.28 | Ross Spock (11) | Niceville High School | Niceville | FL |
| 149 | :46.28 | Spencer Wollkind (11) | Tesoro High School | Las Flores | CA |
| 149 | :46.28 | Clay Youngquist (10) | Battle Creek Lakeview High School | Battle Creek | MI |
| 152 | :46.30 | Ben Whitenack (11) | Healdsburg High School | Healdsburg | CA |
| 153 | :46.31 | Brock Jackson (12) | Sturgis High School | Sturgis | MI |
| 154 | :46.32 | Connor Signorin (11) | Peddie School | Hightstown | NJ |
| 154 | :46.32 | Bryan Williams (11) | Avondale High School | Auburn Hills | MI |
| 156 | :46.35 | Brian Martinez (11) | Arbor View High School | Las Vegas | NV |
| 157 | :46.37 | Matt Maurer (12) | Kickapoo High School | Springfield | MO |
| 157 | :46.37 | Caleb Schuermann (10) | Omaha Creighton Prep | Omaha | NE |
| 159 | :46.38 | Trice Bailey (12) | Seminole High School | Sanford | FL |
| 160 | :46.39 | Trevor Carr (12) | James Monroe High School | Fredericksburg | VA |
| 160 | :46.39 | Zach Chow (11) | Muhlenberg High School | Laureldale | PA |
| 160 | :46.39 | Geoffery Jameson (11) | Fallbrook Union High School | Fallbrook | CA |
| 160 | :46.39 | Ryker Saunders (11) | Battle Ground Academy | Franklin | TN |
| 160 | :46.39 | Niccolo Wilson (11) | Poway High School | Poway | CA |
| 165 | :46.40 | George M. Frank (9 ) | Naples High School | Naples | FL |
| 165 | :46.40 | Byron Gruendl (12) | San Ramon Valley High School | Danville | CA |
| 167 | :46.41 | Ethan Griffel (11) | Idaho Falls High School | Idaho Falls | ID |
| 168 | :46.42 | Joseph Beutler (12) | Snow Canyon High School | St. George | UT |
| 169 | :46.43 | Dan Fitzgerald (12) | Upper Dublin High School | Ft. Washington | PA |
| 169 | :46.43 | Tommy King (12) | Peachtree Ridge High School | Suwanee | GA |
| 169 | :46.43 | Jesse Martucci (12) | Emmaus High School | Emmaus | PA |
| 169 | :46.43 | Mick White (11) | Rockhurst Jesuit High School | Kansas City | MO |
| 173 | :46.44 | Alexander Hoff (12) | Mercer Island High School | Mercer Island | WA |