| 1 | 18:24.45 | Katherine LeeShoreham-Wading River | Shoreham-Wading River '18 | Section XI Girls Division XC Championships | 2017 |
| 2 | 18:43.65 | Kelsey MargeyHarborfields | Harborfields '12 | Suffolk Officials XC Invitational | 2010 |
| 3 | 18:49.70 | Tiana GuevaraMiller Place | Miller Place '14 | Section XI Division XC Championships | 2012 |
| 4 | 19:06.84 | Roshni SinghBay Shore | Bay Shore '20 | Section XI Girls Division XC Championships | 2017 |
| 5 | 19:11.40 | Talia GuevaraMiller Place | Miller Place '14 | Section XI Division XC Championships | 2012 |
| 6 | 19:11.50 | Laura NolanMiller Place | Miller Place '16 | Section XI Division XC Championships | 2012 |
| 7 | 19:18.20 | Sarah ConnellyMount Sinai | Mount Sinai '20 | Section XI Girls Division XC Championships | 2017 |
| 8 | 19:24.87 | Mary Kate AnselminiWard Melville | Ward Melville '11 | Bob Pratt Cross Country Invitational | 2010 |
| 9 | 19:25.30 | Kathleen NaeherKings Park | Kings Park '13 | Section XI Division XC Championships | 2012 |
| 10 | 19:28.40 | Brigid BrennanNorthport | Northport '14 | Section XI Division XC Championships | 2012 |
| 11 | 19:31.42 | Katherine SkinnerRiverhead | Riverhead '10 | Bob Pratt Cross Country Invitational | 2009 |
| 12 | 19:31.70 | Courtney WilliamsWard Melville | Ward Melville '16 | Section XI Division XC Championships | 2012 |
| 13 | 19:32.41 | Kaitlyn ChandrikaMount Sinai | Mount Sinai '21 | Section XI Girls Division XC Championships | 2017 |
| 14 | 19:36.45 | Gabrielle SchneidSmithtown | Smithtown '19 | Section XI Girls Division XC Championships | 2017 |
| 15 | 19:38.30 | Shannon AhernKings Park | Kings Park '14 | Section XI Division XC Championships | 2012 |
| 16 | 19:38.48 | Caroline O'HeaWard Melville | Ward Melville '12 | Saint Anthony's Cross Country Invitational | 2008 |
| 17 | 19:39.92 | Melissa MeroneSachem East | Sachem East '20 | Section XI Girls Division XC Championships | 2017 |
| 18 | 19:46.00 | Kristen HomeyerKings Park | Kings Park '14 | Section XI Division XC Championships | 2012 |
| 19 | 19:46.93 | Michelle GayeHarborfields | Harborfields '11 | Suffolk Officials XC Invitational | 2010 |
| 20 | 19:48.40 | Amy IrvingConnetquot | Connetquot '13 | Section XI Division XC Championships | 2012 |
| 21 | 19:51.46 | Rachel RuggieroSachem East | Sachem East '18 | Section XI Girls Division XC Championships | 2017 |
| 22 | 19:52.15 | Noreen GuilfoyleMount Sinai | Mount Sinai '18 | Section XI Girls Division XC Championships | 2017 |
| 23 | 19:52.70 | Jackie ThorneNorthport | Northport '16 | Section XI Division XC Championships | 2012 |
| 24 | 19:53.70 | Catherine FarrellSmithtown East | Smithtown East '19 | Section XI Girls Division XC Championships | 2017 |
| 25 | 19:53.90 | Victoria IngramSmithtown West | Smithtown West '14 | Section XI Division XC Championships | 2012 |
| 26 | 19:55.70 | Sarah HardieJohn Glenn | John Glenn '14 | Section XI Division XC Championships | 2012 |
| 27 | 19:57.67 | Klaire KlemensWest Islip | West Islip '18 | Section XI Girls Division XC Championships | 2017 |
| 28 | 19:57.80 | Shannon O'HehirSachem East | Sachem East '14 | Section XI Division XC Championships | 2012 |
| 29 | 20:02.21 | Jordyn McDonnellSachem North | Sachem North '19 | Section XI Girls Division XC Championships | 2017 |
| 30 | 20:05.47 | Lindsey DodenhoffSachem East | Sachem East '19 | Section XI Girls Division XC Championships | 2017 |
| 31 | 20:07.84 | Allison StapletonCommack | Commack '11 | Bob Pratt Cross Country Invitational | 2009 |
| 32 | 20:08.33 | Sarah ZieveNorthport | Northport '13 | Saint Anthony's Cross Country Invitational | 2008 |
| 33 | 20:08.35 | Juliana MarcucciRiverhead | Riverhead '12 | Suffolk Coaches XC Invitational | 2011 |
| 34 | 20:09.70 | Jessica BallWest Islip | West Islip '13 | Section XI Division XC Championships | 2012 |
| 35 | 20:09.81 | Lindsey GallagherShelter Island | Shelter Island '18 | Section XI Girls Division XC Championships | 2017 |
| 36 | 20:10.21 | Alexandra SmithShoreham-Wading River | Shoreham-Wading River '19 | Section XI Girls Division XC Championships | 2017 |
| 37 | 20:10.23 | Ali FooteWest Islip | West Islip '11 | Bob Pratt Cross Country Invitational | 2009 |
| 38 | 20:11.90 | Kaylee BergenMattituck | Mattituck '15 | Section XI Division XC Championships | 2012 |
| 39 | 20:12.89 | Tara HauffWest Babylon | West Babylon '18 | Section XI Girls Division XC Championships | 2017 |
| 40 | 20:14.94 | Emily GintySmithtown East | Smithtown East '20 | Section XI Girls Division XC Championships | 2017 |
| 41 | 20:15.90 | DeCicco AlexandraEastport-South Manor | Eastport-South Manor '16 | Section XI Division XC Championships | 2012 |
| 42 | 20:16.16 | Josephine CritchlWest Babylon | West Babylon '21 | Section XI Girls Division XC Championships | 2017 |
| 43 | 20:17.21 | Krystina ChoinskiHauppauge | Hauppauge '11 | Suffolk Officials XC Invitational | 2010 |
| 44 | 20:18.19 | Sami ReillyWard Melville | Ward Melville '11 | Bob Pratt Cross Country Invitational | 2009 |
| 45 | 20:18.60 | Cara JozefowskiNorthport | Northport '14 | Section XI Division XC Championships | 2012 |
| 46 | 20:19.30 | Mackenzie ColemanSachem North | Sachem North '16 | Section XI Division XC Championships | 2012 |
| 47 | 20:20.20 | Molly RamirezSachem North | Sachem North '20 | Section XI Girls Division XC Championships | 2017 |
| 48 | 20:21.29 | Kaitlyn DeYulioCommack | Commack '19 | Section XI Girls Division XC Championships | 2017 |
| 49 | 20:21.62 | Lianne FarberNorthport | Northport '10 | Saint Anthony's Cross Country Invitational | 2008 |
| 50 | 20:23.80 | Dana CebulskiEast Hampton | East Hampton '15 | Section XI Division XC Championships | 2012 |
| 51 | 20:23.94 | Cassandra ShoreEastport-South Manor | Eastport-South Manor '19 | Section XI Girls Division XC Championships | 2017 |
| 52 | 20:24.30 | Jasmin ReyesBay Shore | Bay Shore '16 | Section XI Division XC Championships | 2012 |
| 53 | 20:25.00 | Kaitlin DiMartinoSachem East | Sachem East '14 | Section XI Division XC Championships | 2012 |
| 54 | 20:25.90 | Brooke CatalanoWest Islip | West Islip '15 | Section XI Division XC Championships | 2012 |
| 55 | 20:27.50 | Rebecca MacleodNorthport | Northport '16 | Section XI Division XC Championships | 2012 |
| 56 | 20:28.00 | Kelly FlanaganNorthport | Northport '13 | Section XI Division XC Championships | 2012 |
| 57 | 20:28.20 | Mariah Jno-CharlesBellport | Bellport '15 | Section XI Division XC Championships | 2012 |
| 58 | 20:30.45 | Hannah HellerWest Babylon | West Babylon '19 | Section XI Girls Division XC Championships | 2017 |
| 59 | 20:30.90 | Nicole SchaferEastport-South Manor | Eastport-South Manor '13 | Section XI Division XC Championships | 2012 |
| 60 | 20:31.60 | Brianna DelzellBayport-Blue Point | Bayport-Blue Point '15 | Section XI Division XC Championships | 2012 |
| 61 | 20:32.00 | Auciello DelinaMercy | Mercy '14 | Section XI Division XC Championships | 2012 |
| 62 | 20:32.30 | Ciara MurphySachem East | Sachem East '16 | Section XI Division XC Championships | 2012 |
| 63 | 20:32.50 | Kaitlyn OhrtmanShoreham-Wading River | Shoreham-Wading River '16 | Section XI Division XC Championships | 2012 |
| 64 | 20:32.55 | Kerri-Anne FlynnSt. Anthony's | St. Anthony's '13 | Saint Anthony's Cross Country Invitational | 2011 |
| 65 | 20:33.08 | Victoria D'AmatoNorthport | Northport '15 | Suffolk Coaches XC Invitational | 2011 |
| 66 | 20:35.07 | Kelly AbbateNorthport | Northport '10 | Saint Anthony's Cross Country Invitational | 2008 |
| 67 | 20:37.40 | Lindsay DoughertyCommack | Commack '14 | Section XI Division XC Championships | 2012 |
| 68 | 20:37.60 | Isabella DiPalermMount Sinai | Mount Sinai '20 | Section XI Girls Division XC Championships | 2017 |
| 69 | 20:38.69 | Erin MellyConnetquot | Connetquot '14 | Suffolk Coaches XC Invitational | 2011 |
| 70 | 20:38.91 | Stephanie LeoSt. Anthony's | St. Anthony's '14 | Saint Anthony's Cross Country Invitational | 2011 |
| 71 | 20:38.93 | Kelly LavanSachem North | Sachem North '13 | Suffolk Coaches XC Invitational | 2011 |
| 72 | 20:39.18 | Jessica SmillieConnetquot | Connetquot '14 | Suffolk Coaches XC Invitational | 2011 |
| 73 | 20:41.14 | Christina YakabosRiverhead | Riverhead '20 | Section XI Girls Division XC Championships | 2017 |
| 74 | 20:43.00 | Marissa CossaroNorthport | Northport '13 | Section XI Division XC Championships | 2012 |
| 75 | 20:43.71 | Danelle RoseMiller Place | Miller Place '20 | Section XI Girls Division XC Championships | 2017 |
| 76 | 20:45.41 | Victoria CiottiSt. Anthony's | St. Anthony's '12 | Saint Anthony's Cross Country Invitational | 2011 |
| 77 | 20:47.68 | Erin NevilleCommack | Commack '14 | Bob Pratt Cross Country Invitational | 2010 |
| 78 | 20:48.20 | Caroline HoegMount Sinai | Mount Sinai '16 | Section XI Division XC Championships | 2012 |
| 79 | 20:48.60 | Lindsay ArcuriBay Shore | Bay Shore '13 | Section XI Division XC Championships | 2012 |
| 80 | 20:48.66 | Jenna NewmanSayville | Sayville '19 | Section XI Girls Division XC Championships | 2017 |
| 81 | 20:48.89 | Victoria LoweSmithtown West | Smithtown West '12 | Bob Pratt Cross Country Invitational | 2009 |
| 82 | 20:50.55 | Alyssa KnottSmithtown West | Smithtown West '11 | Bob Pratt Cross Country Invitational | 2010 |
| 83 | 20:50.70 | Tara GatzMattituck | Mattituck '14 | Section XI Division XC Championships | 2012 |
| 84 | 20:52.10 | Katie SarokaBayport-Blue Point | Bayport-Blue Point '13 | Section XI Division XC Championships | 2012 |
| 85 | 20:52.11 | Claire RonanComsewogue | Comsewogue '21 | Section XI Girls Division XC Championships | 2017 |
| 86 | 20:52.84 | Elizabeth FierroNorthport | Northport '11 | Saint Anthony's Cross Country Invitational | 2008 |
| 87 | 20:53.60 | Molly DearieWard Melville | Ward Melville '15 | Section XI Division XC Championships | 2012 |
| 88 | 20:53.71 | Emily CookShoreham-Wading River | Shoreham-Wading River '22 | Section XI Girls Division XC Championships | 2017 |
| 89 | 20:53.76 | Anna CorriganNorthport | Northport '12 | Saint Anthony's Cross Country Invitational | 2011 |
| 90 | 20:54.53 | Gina D'AngeloSt. Anthony's | St. Anthony's '14 | Saint Anthony's Cross Country Invitational | 2011 |
| 91 | 20:54.66 | Margaret McKeeverNorth Babylon | North Babylon '18 | Section XI Girls Division XC Championships | 2017 |
| 92 | 20:55.40 | Suzie PetrykHuntington | Huntington '15 | Section XI Division XC Championships | 2012 |
| 93 | 20:55.89 | Christine EisenbergHauppauge | Hauppauge '13 | Suffolk Coaches XC Invitational | 2011 |
| 94 | 20:56.50 | Stephanie VickersWesthampton Beach | Westhampton Beach '13 | Section XI Division XC Championships | 2012 |
| 95 | 20:57.74 | Jennifer JohnstonLongwood | Longwood '10 | Saint Anthony's Cross Country Invitational | 2008 |
| 96 | 20:58.52 | Bridget RoellKings Park | Kings Park '20 | Section XI Girls Division XC Championships | 2017 |
| 97 | 20:58.70 | Jayda AllenSachem East | Sachem East '14 | Section XI Division XC Championships | 2012 |
| 98 | 20:59.13 | Madison DelzellBayport-Blue Point | Bayport-Blue Point '19 | Section XI Girls Division XC Championships | 2017 |
| 99 | 20:59.67 | Danielle VazquezSachem East | Sachem East '12 | Suffolk Coaches XC Invitational | 2011 |
| 100 | 21:00.96 | Julianna HorzCommack | Commack '19 | Section XI Girls Division XC Championships | 2017 |
