| 1. | | George Empty | 47.95a | 12 | MD | C.H. Flowers | PGCPS Outdoor Track and Field Championship | Sat, May 9 |
| 2. | | George Chambers | 48.02a | 11 | MD | Archbishop Curley | MIAA/IAAM Conference Championship | Sat, May 16 |
| 3. | | Jeremy Blair | 48.20a | 12 | MD | Richard Montgomery | Best Buy of Waldorf Invitational | Sat, Apr 18 |
| 4. | | Ben Mckenzie | 48.55a | Jr | MD | Largo | PGCPS Outdoor Track and Field Championship | Sat, May 9 |
| 5. | | John Davenport | 48.66a | 12 | MD | Loyola Blakefield | MIAA/IAAM Conference Championship | Sat, May 16 |
| 6. | | Dominic Clarke | 48.73a | 12 | MD | Tuscarora | Pikesville Invitational | Sat, Apr 4 |
| 7. | | Nick Letourneau | 48.84c | 11 | MD | Georgetown Prep | Walter Johnson, Kennedy and Georgetown Prep | Tue, Apr 28 |
| 8. | | Darren Harris | 48.95a | 12 | MD | Winston Churchill | MPSSAA State Championships | Sat, May 23 |
| 9. | | Micheal Houston | 49.06a | 12 | MD | Baltimore Polytechnic Institute | MPSSAA State Championships | Sat, May 23 |
| 10. | | Joseph Woiwode | 49.10a | 11 | MD | Georgetown Prep | I.A.C. Championships - Trials | Fri, May 15 |
| 11. | | Leland Pittman | 49.22a | 11 | MD | Landon | Draper Invitational - Day 1 | Fri, May 1 |
| | Aaron Chatman | 49.22a | 12 | MD | North Point | MPSSAA State Championships | Sat, May 23 |
| 13. | | Champ Page | 49.25a | 9 | MD | Henry E. Lackey | Best Buy of Waldorf Invitational | Sat, Apr 18 |
| 14. | | Daniel Ross | 49.30a | 12 | MD | Baltimore Polytechnic Institute | MPSSAA State Championships | Sat, May 23 |
| 15. | | Duane Parker | 49.31a | 12 | MD | Mount Saint Joseph | Clash of the Titans | Sat, May 2 |
| 16. | | Cortlandt Harris | 49.34a | 11 | MD | Our Lady Of Good Counsel | Draper Invitational - Day 1 | Fri, May 1 |
| | Emmanuel Noumossie | 49.34a | 12 | MD | Bowie | PGCPS Outdoor Track and Field Championship | Sat, May 9 |
| 18. | | Deandre Robinson | 49.40a | 12 | MD | Westlake | MPSSAA State Championships | Sat, May 23 |
| 19. | | Chris Onuigbo | 49.45a | 12 | MD | Northwest | Viking Invitational | Sat, Apr 18 |
| 20. | | Mark Small | 49.48a | 12 | MD | Clarksburg | MPSSAA State Championships | Sat, May 23 |
| 21. | | Bryson Carr | 49.54a | 11 | MD | Friendly Senior | Best Buy of Waldorf Invitational | Sat, Apr 18 |
| | Jordan Colman | 49.54c | 10 | MD | Suitland | 4A South Regional | Sat, May 16 |
| | Michael Rowland | 49.54c | 12 | MD | C.H. Flowers | 4A South Regional | Sat, May 16 |
| 24. | | Hassan Dixon | 49.62a | 11 | MD | Northwest | MPSSAA State Championships | Sat, May 23 |
| 25. | | Tristan Julian | 49.69a | 12 | MD | North Point | MPSSAA State Championships | Sat, May 23 |
| 26. | | Antonio Palmer | 49.73a | 12 | MD | Gaithersburg | Meade Stampede Invitational | Sat, Apr 18 |
| 27. | | William Kellogg | 49.74a | 11 | MD | DeMatha Catholic | WCAC Championship | Fri, May 15 |
| | Kalil Zaky | 49.74a | 12 | MD | Long Reach | 3A East Regional | Sat, May 16 |
| 29. | | Jeffrey Perkins | 49.77a | 12 | MD | Woodlawn | Woodlawn Warrior Invitational | Sat, Apr 18 |
| 30. | | Jibri Victorian | 49.78a | 12 | MD | Laurel | PGCPS Outdoor Track and Field Championship | Sat, May 9 |
| 31. | | Wayne Bartholomew | 49.83a | 12 | MD | Quince Orchard | Hawk Invitational | Sat, Apr 18 |
| 32. | | Fabian Gonzalez | 49.88a | 11 | MD | Tuscarora | Pikesville Invitational | Sat, Apr 4 |
| | Dana Smothers | 49.88a | 12 | MD | Harford Tech | MPSSAA State Championships | Sat, May 23 |
| 34. | | Jordan Pridgen | 49.93a | 11 | MD | Digital Harbor | Pikesville Invitational | Sat, Apr 4 |
| | Ben Raver | 49.93a | 11 | MD | North Carroll | MPSSAA State Championships | Sat, May 23 |
| | Andrew Wright | 49.93a | Jr | MD | Largo | PGCPS Outdoor Track and Field Championship | Sat, May 9 |
| 37. | | Kenny Clarkson | 49.97a | 12 | MD | Centennial | MPSSAA State Championships | Sat, May 23 |
| 38. | | Michael Williams | 50.00a | 10 | MD | DeMatha Catholic | MileStat.com Elite Track Gala | Sat, Jun 6 |
| 39. | | Nick Shade | 50.02a | 12 | MD | Mount Hebron | Best Buy of Waldorf Invitational | Sat, Apr 18 |
| 40. | | Miguel Narine | 50.04a | 11 | MD | Northwestern-BC | Woodlawn Warrior Invitational | Sat, Apr 18 |
| 41. | | Denny Long | 50.07a | Sr | MD | Eleanor Roosevelt | PGCPS Outdoor Track and Field Championship | Sat, May 9 |
| 42. | | Dominique Mathis | 50.08a | 11 | MD | Old Mill Senior | Anne Arundel County Championships | Wed, May 6 |
| 43. | | Marvin Lisk | 50.12a | 12 | MD | Northwest | Montgomery County Championships | Wed, May 6 |
| 44. | | Kevin King | 50.24c | 12 | MD | Governor Thomas Johnson | Frederick City Championship | Wed, Apr 8 |
| 45. | | Connor Pencek | 50.26a | 12 | MD | Glenelg | Hawk Invitational | Sat, Apr 18 |
| 46. | | Sheldon Samuel | 50.29a | 12 | MD | Elkton | MPSSAA State Championships | Sat, May 23 |
| 47. | | Edward Brown | 50.30a | 11 | MD | Mergenthaler Voc Tech | 3A North Regional Meet | Sat, May 16 |
| 48. | | Jordan Lomax | 50.32a | 10 | MD | DeMatha Catholic | TJ Penultimate Experience | Sat, May 9 |
| 49. | | Calvin Wheeler | 50.33a | 12 | MD | Western Tech | MPSSAA State Championships | Sat, May 23 |
| | Scott Rader | 50.33a | 12 | MD | Huntingtown | Best Buy of Waldorf Invitational | Sat, Apr 18 |
| 51. | | Jovon Edwards | 50.38a | 12 | MD | Eleanor Roosevelt | Crimson Tide Invitational | Sat, Apr 4 |
| | Kenneth Clarkson | 50.38a | 9 | MD | Centennial | Howard County Championship | Wed, May 6 |
| 53. | | Saquan Johnson | 50.41a | 10 | MD | Suitland | PGCPS Outdoor Track and Field Championship | Sat, May 9 |
| 54. | | Kyle Fairchild | 50.42a | 12 | MD | Chesapeake | MPSSAA State Championships | Sat, May 23 |
| 55. | | Brad Bowman | 50.44c | 11 | MD | North Caroline | Bayside Conference Championships | Thu, May 7 |
| 56. | | Isaiah Kasey | 50.47a | 12 | MD | New Town | 1A North Region Meet | Sat, May 16 |
| 57. | | Martin Dally | 50.52a | 11 | MD | Walter Johnson | Montgomery County Championships | Wed, May 6 |
| 58. | | Brian David | 50.54c | 11 | MD | Henry A Wise | 4A South Regional | Sat, May 16 |
| 59. | | Tuswami Copeland | 50.58a | 11 | MD | Meade | Meade Stampede Invitational | Sat, Apr 18 |
| 60. | | Bryan Allen | 50.59a | 12 | MD | Frederick Douglass-PG | PGCPS Outdoor Track and Field Championship | Sat, May 9 |
| 61. | | Christopher Walker | 50.61a | 10 | MD | DeMatha Catholic | WCAC Championship | Fri, May 15 |
| 62. | | Brandon Chase | 50.62a | 9 | MD | Harford Tech | MPSSAA State Championships | Sat, May 23 |
| 63. | | Courtney Jarvis | 50.63a | 11 | MD | Westlake | Best Buy of Waldorf Invitational | Sat, Apr 18 |
| 64. | | Sam Machulcz | 50.64c | 12 | MD | Kent Island | Bayside Conference Championships | Thu, May 7 |
| 65. | | Eddie Brown | 50.70a | 12 | MD | Dundalk | 3A North Regional Meet | Sat, May 16 |
| 66. | | Christian White | 50.72a | 9 | MD | Meade | 3A East Regional | Sat, May 16 |
| 67. | | Javon Jordan | 50.73a | 12 | MD | Central-PG | PGCPS Outdoor Track and Field Championship | Sat, May 9 |
| 68. | | Brian Bishop | 50.83a | 11 | MD | McDonough | Best Buy of Waldorf Invitational | Sat, Apr 18 |
| 69. | | Eric Farmer | 50.84c | 12 | MD | Patuxent | Patuxent, Lackey, vs Northern | Thu, Apr 16 |
| | Brendan Etzel | 50.84c | - | MD | Richard Montgomery | Magruder Quad Meet | Wed, Apr 1 |
| 71. | | Kenneth McCuin | 50.90a | 10 | MD | Mergenthaler Voc Tech | 3A North Regional Meet | Sat, May 16 |
| 72. | | Jabulani Blyden | 50.92a | 12 | MD | Gilman | Pikesville Invitational | Sat, Apr 4 |
| 73. | | John Taylor | 50.94c | 12 | MD | Kent Island | 2A East Regional Championship | Sat, May 16 |
| 74. | | Ryan Vanderwest | 51.00a | 11 | MD | Leonardtown | MPSSAA State Championships | Sat, May 23 |
| 75. | | Tristan Youngblood | 51.01a | Sr | MD | Eleanor Roosevelt | Taco Bell Invitational Meet | Sat, Apr 11 |
| 76. | | Leroy Howard | 51.02a | 12 | MD | St Andrews Episcopal | ISL/MAC Track & Field Championship-Day 2 | Sat, May 9 |
| 77. | | Joseph Day | 51.06a | 12 | MD | New Town | Pikesville Invitational | Sat, Apr 4 |
| | Dean Mertz | 51.06a | 11 | MD | Archbishop Spalding | Best Buy of Waldorf Invitational | Sat, Apr 18 |
| | Julius Ajayi | 51.06a | 12 | MD | Hammond | Best Buy of Waldorf Invitational | Sat, Apr 18 |
| 80. | | Corey Cutler | 51.09a | 10 | MD | Pikesville Senior | Pikesville Invitational | Sat, Apr 4 |
| 81. | | Aaron Williams | 51.10a | 12 | MD | Meade | Crimson Tide Invitational | Sat, Apr 4 |
| 82. | | Andrew Finlayson | 51.12a | 12 | MD | Severna Park | Anne Arundel County Championships | Wed, May 6 |
| 83. | | Devante Thomas | 51.14c | 11 | MD | Damascus | Damascus vs Quince Orchard | Tue, Mar 31 |
| 84. | | Daniel Ballah | 51.15a | 12 | MD | Bowie | Morgan State Invitational | Sat, Mar 21 |
| 85. | | Mandela Ochieng | 51.18a | 10 | MD | Francis Scott Key | Carroll County Championships | Wed, May 6 |
| 86. | | James Liggens | 51.19a | 11 | MD | Edgewood | UCBAC Championships | Fri, May 8 |
| 87. | | Diontae Jones | 51.22a | 12 | MD | Howard | Howard County Championship | Wed, May 6 |
| 88. | | Justin Kennell | 51.23a | 11 | MD | Century | Pikesville Invitational | Sat, Apr 4 |
| 89. | | Rob Finkel | 51.26a | 12 | MD | Barrie | Draper Invitational - Day 1 | Fri, May 1 |
| 90. | | Rodney Brown | 51.27a | 9 | MD | North Point | Best Buy of Waldorf Invitational | Sat, Apr 18 |
| 91. | | Laron Knight | 51.29a | 12 | MD | Thomas Stone | 27TH Annual T.C. Williams High School | Sat, May 2 |
| 92. | | Tyler Scruggs | 51.35a | 12 | MD | Loch Raven | 2A North Region Meet | Sat, May 16 |
| | Chey Savoy | 51.35a | 12 | MD | Gwynn Park | PGCPS Outdoor Track and Field Championship | Sat, May 9 |
| | Joey Lertora | 51.35a | 11 | MD | Stephen Decatur | 3A East Regional | Sat, May 16 |
| 95. | | Mark Hamilton | 51.36a | 12 | MD | Our Lady Of Good Counsel | Lake Braddock Hall of Fame Invitational | Sat, Apr 18 |
| 96. | | Paul Ford | 51.37a | 11 | MD | Eleanor Roosevelt | Morgan State Invitational | Sat, Mar 21 |
| 97. | | Brandon Chatmon | 51.38a | 9 | MD | North Point | Best Buy of Waldorf Invitational | Sat, Apr 18 |
| 98. | | Leon Cardwell | 51.40a | 12 | MD | Smithsburg | MPSSAA State Championships | Sat, May 23 |
| | Robert Corbitt | 51.40a | 11 | MD | DeMatha Catholic | MileStat.com Elite Track Gala | Sat, Jun 6 |
| 100. | | Rodney Kizito | 51.41a | 12 | MD | Springbrook | 4A West Regional Championship (Day 2) | Thu, May 14 |
| 101. | | Rob Michels | 51.42a | 12 | MD | Middletown | 2A West Regional Championship | Thu, May 14 |
| | Erich Bailey | 51.42a | 12 | MD | Bladensburg | PGCPS Outdoor Track and Field Championship | Sat, May 9 |
| 103. | | Wil Collins | 51.45a | 12 | MD | Atholton | Howard County Championship | Wed, May 6 |
| 104. | | Jamal Joseph | 51.47a | 11 | MD | DeMatha Catholic | Crimson Tide Invitational | Sat, Apr 4 |
| | Taariq Elliot | 51.47a | So | MD | Thomas S Wootton | 4A West Regional Championship (Day 2) | Thu, May 14 |
| 106. | | Coby Gussio | 51.49a | 10 | MD | Boonsboro | Antietam Conference Championship | Fri, May 1 |
| 107. | | Ian Anderson | 51.50a | 12 | MD | South Hagerstown | 2A West Regional Championship | Thu, May 14 |
| 108. | | Jaylen Robinson | 51.52a | - | MD | Mount Saint Joseph | Clash of the Titans | Sat, May 2 |
| 109. | | Brandon Hairston | 51.57a | 10 | MD | Atholton | Pikesville Invitational | Sat, Apr 4 |
| 110. | | Cortez Crawley | 51.58a | 12 | MD | Eastern Tech | 2A North Region Meet | Sat, May 16 |
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(Total stats: 964)
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