| 1 | 18:13.40 | Kelsey MargeyHarborfields | Harborfields '12 | Section XI Sectional Championships | 2010 |
| 2 | 18:24.45 | Katherine LeeShoreham-Wading River | Shoreham-Wading River '18 | Section XI Girls Division XC Championships | 2017 |
| 3 | 18:34.72 | Sarah ConnellyMount Sinai | Mount Sinai '20 | Suffolk Officials XC Invitational | 2018 |
| 4 | 18:36.20 | Rachel PaulSachem East | Sachem East '12 | Section XI Sectional Championships | 2011 |
| 5 | 18:49.70 | Tiana GuevaraMiller Place | Miller Place '14 | Section XI Division XC Championships | 2012 |
| 6 | 18:52.60 | Brigid BrennanNorthport | Northport '14 | Section XI Sectional Championships | 2009 |
| 7 | 18:55.60 | Mary Kate AnselminiWard Melville | Ward Melville '11 | Section XI Sectional Championships | 2010 |
| 8 | 18:59.10 | Ali FooteWest Islip | West Islip '11 | Section XI Sectional Championships | 2009 |
| 9 | 19:00.00 | Katherine SkinnerRiverhead | Riverhead '10 | Section XI Sectional Championships | 2009 |
| 10 | 19:02.83 | Brittany SheffeyBellport | Bellport '07 | Section XI Sectional Championships | 2005 |
| 11 | 19:03.69 | Fiona McLoughlinCommack | Commack '20 | Suffolk Officials XC Invitational | 2018 |
| 12 | 19:06.84 | Roshni SinghBay Shore | Bay Shore '20 | Section XI Girls Division XC Championships | 2017 |
| 13 | 19:11.40 | Talia GuevaraMiller Place | Miller Place '14 | Section XI Division XC Championships | 2012 |
| 14 | 19:11.50 | Laura NolanMiller Place | Miller Place '16 | Section XI Division XC Championships | 2012 |
| 15 | 19:14.17 | Leonora JoyStony Brook | Stony Brook | Stony Brook University XC Invitational | 2004 |
| 16 | 19:14.90 | Allison StapletonCommack | Commack '11 | Section XI Sectional Championships | 2010 |
| 17 | 19:16.80 | Alyssa KnottSmithtown West | Smithtown West '11 | Section XI Sectional Championships | 2010 |
| 18 | 19:17.63 | Katie MurphyHauppauge | Hauppauge '17 | Section XI Division XC Championships | 2014 |
| 19 | 19:19.40 | Caroline O'HeaWard Melville | Ward Melville '12 | Section XI Sectional Championships | 2011 |
| 20 | 19:19.50 | Michelle GayeHarborfields | Harborfields '11 | Section XI Division Championships | 2010 |
| 21 | 19:21.70 | Erin NevilleCommack | Commack '14 | Section XI Sectional Championships | 2010 |
| 22 | 19:24.80 | Victoria D'AmatoNorthport | Northport '15 | Section XI Division Championships | 2011 |
| 23 | 19:24.84 | Jessica HampsonSmithtown | Smithtown '06 | Section XI Sectional Championships | 2005 |
| 24 | 19:25.30 | Kathleen NaeherKings Park | Kings Park '13 | Section XI Division XC Championships | 2012 |
| 25 | 19:27.58 | Gabrielle SchneideSmithtown East | Smithtown East '19 | Section XI Division XC Championships | 2015 |
| 26 | 19:27.58 | Gabrielle SchneidSmithtown | Smithtown '19 | Section XI Division XC Championships | 2015 |
| 27 | 19:28.68 | Jordyn McDonnellSachem North | Sachem North '19 | Section XI Division XC Championships | 2018 |
| 28 | 19:30.37 | Bridget KanaleyBay Shore | Bay Shore '17 | Section XI Division XC Championships | 2015 |
| 29 | 19:31.70 | Courtney WilliamsWard Melville | Ward Melville '16 | Section XI Division XC Championships | 2012 |
| 30 | 19:31.98 | Alexandra HaysShoreham-Wading River | Shoreham-Wading River '17 | Section XI Division XC Championships | 2015 |
| 31 | 19:32.30 | Niamh AsheEast Islip | East Islip '13 | Suffolk Coaches Invitational | 2012 |
| 32 | 19:32.41 | Kaitlyn ChandrikaMount Sinai | Mount Sinai '21 | Section XI Girls Division XC Championships | 2017 |
| 33 | 19:32.59 | Taylor McClayEastport-South Manor | Eastport-South Manor '17 | Section XI Division XC Championships | 2015 |
| 34 | 19:32.65 | Delaney WorthSt. Anthony's | St. Anthony's '14 | NSCHSAA League Championships | 2012 |
| 35 | 19:33.76 | Noreen GuilfoyleMount Sinai | Mount Sinai '18 | Suffolk Coaches Invitational | 2016 |
| 36 | 19:34.00 | Lianne FarberNorthport | Northport '10 | Section XI Sectional Championships | 2009 |
| 37 | 19:34.80 | Anna CorriganNorthport | Northport '12 | Section XI Sectional Championships | 2010 |
| 38 | 19:36.27 | Kristy LongmanSayville | Sayville '07 | Section XI Sectional Championships | 2005 |
| 39 | 19:36.45 | Gabrielle SchneiderSmithtown East | Smithtown East '19 | Section XI Girls Division XC Championships | 2017 |
| 40 | 19:37.50 | Sami ReillyWard Melville | Ward Melville '11 | Section XI Sectional Championships | 2009 |
| 41 | 19:37.70 | Shannon O'HehirSachem East | Sachem East '14 | Section XI Sectional Championships | 2011 |
| 42 | 19:38.30 | Shannon AhernKings Park | Kings Park '14 | Section XI Division XC Championships | 2012 |
| 43 | 19:38.64 | Nolan LauraMiller Place | Miller Place '16 | Girls Championship standard | |
| 44 | 19:38.96 | Elise RamirezSachem North | Sachem North '15 | Section XI Division XC Championships | 2014 |
| 45 | 19:39.70 | Paige KoenigSmithtown East | Smithtown East '12 | Section XI Sectional Championships | 2010 |
| 46 | 19:39.92 | Melissa MeroneSachem East | Sachem East '20 | Section XI Girls Division XC Championships | 2017 |
| 47 | 19:41.24 | Sarah BeresfordStony Brook | Stony Brook | Stony Brook University XC Invitational | 2004 |
| 48 | 19:42.33 | Lauren SchmidtBay Shore | Bay Shore '06 | Section XI Sectional Championships | 2005 |
| 49 | 19:42.64 | Callie HoganBay Shore | Bay Shore '07 | Section XI Sectional Championships | 2005 |
| 50 | 19:42.80 | Jessica SmillieConnetquot | Connetquot '14 | Section XI Sectional Championships | 2011 |
| 51 | 19:43.20 | Katie SarokaBayport-Blue Point | Bayport-Blue Point '13 | Section XI Division Championships | 2011 |
| 52 | 19:43.68 | Sydney CarpenterBay Shore | Bay Shore '20 | Section XI Division XC Championships | 2018 |
| 53 | 19:44.66 | Catherine FarrellSmithtown East | Smithtown East '19 | Saint Anthony's Cross Country Invitational | 2018 |
| 54 | 19:45.18 | Christina YakaboskiRiverhead | Riverhead '20 | Section XI Division XC Championships | 2018 |
| 55 | 19:45.97 | Stephanie LeoSt. Anthony's | St. Anthony's '14 | Suffolk Coaches Invitational | 2013 |
| 56 | 19:46.00 | Kristen HomeyerKings Park | Kings Park '14 | Section XI Division XC Championships | 2012 |
| 57 | 19:46.03 | Anne CareySt. John the Baptist | St. John the Baptist '11 | NSCHSAA League Championships | 2010 |
| 58 | 19:48.40 | Amy IrvingConnetquot | Connetquot '13 | Section XI Division XC Championships | 2012 |
| 59 | 19:49.97 | Jackie ThorneNorthport | Northport '16 | Section XI Division XC Championships | 2014 |
| 60 | 19:50.18 | Molly DearieWard Melville | Ward Melville '15 | Section XI Division XC Championships | 2014 |
| 61 | 19:50.55 | Victoria IngramSmithtown West | Smithtown West '14 | Jim Smith Invitational | 2013 |
| 62 | 19:50.57 | Melissa TempestaPatchogue-Medford | Patchogue-Medford '06 | Section XI Sectional Championships | 2005 |
| 63 | 19:51.46 | Rachel RuggieroSachem East | Sachem East '18 | Section XI Girls Division XC Championships | 2017 |
| 64 | 19:52.80 | Juliana MarcucciRiverhead | Riverhead '12 | Section XI Division Championships | 2011 |
| 65 | 19:53.04 | Danielle KaragannisNorthport | Northport '06 | Section XI Sectional Championships | 2005 |
| 66 | 19:53.12 | Kate McCormackSt. John the Baptist | St. John the Baptist '15 | NSCHSAA League Championships | 2014 |
| 67 | 19:54.53 | Murphy KatieHauppauge | Hauppauge '17 | Suffolk Coaches Invitational | 2016 |
| 68 | 19:55.70 | Kelly LavanSachem North | Sachem North '13 | Section XI Sectional Championships | 2011 |
| 69 | 19:55.70 | Sarah HardieJohn Glenn | John Glenn '14 | Section XI Division XC Championships | 2012 |
| 70 | 19:55.86 | Kaitlyn OhrtmanShoreham-Wading River | Shoreham-Wading River '16 | Section XI Division XC Championships | 2014 |
| 71 | 19:56.18 | Victoria CiottiSt. Anthony's | St. Anthony's '12 | NSCHSAA League Championships | 2011 |
| 72 | 19:57.25 | Jasmin ReyesBay Shore | Bay Shore '16 | Suffolk Coaches Invitational | 2015 |
| 73 | 19:57.43 | Christine JohnstonLongwood | Longwood '08 | Section XI Sectional Championships | 2005 |
| 74 | 19:57.67 | Klaire KlemensWest Islip | West Islip '18 | Section XI Girls Division XC Championships | 2017 |
| 75 | 19:58.08 | Kelly IoccaConnetquot | Connetquot '17 | Suffolk Coaches Invitational | 2016 |
| 76 | 19:58.82 | Emily GintySmithtown East | Smithtown East '20 | Section XI Division XC Championships | 2018 |
| 77 | 19:59.09 | Bridget ReillyWard Melville | Ward Melville '07 | Section XI Sectional Championships | 2005 |
| 78 | 19:59.18 | Lindsey DodenhoffSachem East | Sachem East '19 | Section XI Division XC Championships | 2018 |
| 79 | 19:59.34 | Melanie PfennigMattituck | Mattituck '17 | Section XI Division XC Championships | 2015 |
| 80 | 20:01.08 | Lauren LavoroSt. Anthony's | St. Anthony's '12 | Suffolk Coaches XC Invitational | 2010 |
| 81 | 20:01.10 | Deirdre ConnorSmithtown East | Smithtown East '14 | Section XI Sectional Championships | 2010 |
| 82 | 20:02.47 | Maria SmithShoreham-Wading River | Shoreham-Wading River '17 | Saint Anthony's Cross Country Invitational | 2016 |
| 83 | 20:02.70 | Lindsay ArcuriBay Shore | Bay Shore '13 | Section XI Sectional Championships | 2009 |
| 84 | 20:02.74 | Kerri-Anne FlynnSt. Anthony's | St. Anthony's '13 | NSCHSAA League Championships | 2011 |
| 85 | 20:03.40 | Erin MellyConnetquot | Connetquot '14 | Section XI Sectional Championships | 2011 |
| 86 | 20:04.38 | Dana HastieStony Brook | Stony Brook | Stony Brook University XC Invitational | 2004 |
| 87 | 20:04.58 | Ryleigh DoneganCenter Moriches | Center Moriches '15 | Section XI Division XC Championships | 2014 |
| 88 | 20:04.69 | Madison DelzellBayport-Blue Point | Bayport-Blue Point '19 | Section XI Division XC Championships | 2015 |
| 89 | 20:04.88 | Mariah Jno-CharlesBellport | Bellport '15 | Section XI Division XC Championships | 2014 |
| 90 | 20:05.90 | Marissa SchoepsConnetquot | Connetquot '11 | Section XI Sectional Championships | 2010 |
| 91 | 20:07.14 | Victoria LaguerreWard Melville | Ward Melville '22 | Section XI Division XC Championships | 2018 |
| 92 | 20:08.33 | Alexandra SmithShoreham-Wading River | Shoreham-Wading River '19 | Suffolk Coaches Invitational | 2018 |
| 93 | 20:08.60 | Victoria LoweSmithtown West | Smithtown West '12 | Section XI Sectional Championships | 2009 |
| 94 | 20:09.38 | Jackie AmatoWesthampton Beach | Westhampton Beach '21 | Suffolk Officials XC Invitational | 2018 |
| 95 | 20:09.40 | Meghan MurphyHalf Hollow Hills West | Half Hollow Hills West '11 | Section XI Sectional Championships | 2010 |
| 96 | 20:09.41 | Kathryn AllardMiller Place | Miller Place '06 | Section XI Sectional Championships | 2005 |
| 97 | 20:09.70 | Jessica BallWest Islip | West Islip '13 | Section XI Division XC Championships | 2012 |
| 98 | 20:09.81 | Lindsey GallagherShelter Island | Shelter Island '18 | Section XI Girls Division XC Championships | 2017 |
| 99 | 20:11.13 | Kaitlyn DeYulioCommack | Commack '19 | Section XI Division XC Championships | 2018 |
| 100 | 20:11.40 | Erin MelliConnetquot | Connetquot '14 | Section XI Sectional Championships | 2010 |
