List of 2020 entrants (296) deferring to 27 June 2021
| First Name | Surname | Running Club | Team |
| Elaine | Adam-Harris | ||
| Scott | Ainsworth | Powerhouse Bootcamp | |
| Karen | Anders | ||
| David | Anstead | ||
| Shaun | Appleton | ||
| Sarah | Armstrong | ||
| Andrew | Armstrong | ||
| Hazel | Ashurst | Peak Fitness | |
| Charlotte | Baker | ||
| Simon | Baldwin | ||
| Tony | Barnes | ||
| Antonia | Barnes | ||
| Charlie | Barr | ||
| Stuart | Barr | ||
| ray | barrett | ||
| Alex | Barrett | ||
| Alice | Bastin | ||
| Daniel | Begley | ||
| Oliver | Benson | ||
| Alistair | Birch | Lonely Goat RC | |
| gregor | black | ||
| sam | black | ||
| Tim | Blair | ||
| Debbie | Blair | ||
| David | Bloomfield | ||
| Thomas | Bowen | The James Figg | |
| Richard | Bowley | ||
| Lauren | Bowman | ||
| David | Bowman | ||
| Lucy | Bradford | Team Thomley | |
| Mike | Brotherston | ||
| Sophie | Brotherston | ||
| Nicola | Buckland | ||
| Fraser | Bullen | OFRS | |
| Adrian | BUNCE | Kidlington Running Club | |
| Jacob | Burgess | ||
| Richard | Burkimsher | Cross Keys | |
| Michael | Burns | ||
| Stuart | Burtenshaw | ||
| Zoe | Butler | ||
| Elly | Cahill | ||
| Joni | Cameron | ||
| Sally | Carr | ||
| Angela | Carroll | ||
| Nicola | Challis | ||
| Mark | Challis | ||
| Amanda | Chandler | ||
| steve | chown | ||
| Charles | Coldham | Team Thomley | |
| Kim | Coleman | ||
| Rachel | Coleman | Lonely Goat RC | |
| Robin | Collins | Headington RR | |
| simon | connell | ||
| Kerri | Constable | ||
| Howard | Cook | Headington RR | |
| Matthew | Costar | ||
| Hans Nobel | Coucheron-Aamot | ||
| Guy | Cunningham | ||
| Sarah | Cuthbert | Handy Cross Runners | |
| tyler | daly | ||
| Aaron | Daly | ||
| William | Dalziel | ||
| Sarah | Del Tozzotto | ||
| Mark | Dickinson | ||
| Michelle | Dickinson | ||
| martyn | dolman | ||
| vanessa | dolman | ||
| Chris | Dolphin | Team Ginger | |
| Sam | Dooley | ||
| Jonathan | Down | ||
| Dominic | Drummond | ||
| Lucy | Durston | ||
| Matthew | Durston | ||
| Marc | Eaton | ||
| Luke | Eaton | ||
| Tom | Eggleton | ||
| Linda | Emery | ||
| Mark | Evans | ||
| Matthew | Evans | ||
| Deborah | Everingham | ||
| Kerry | Eyre | ||
| Susanna | Fawcett | ||
| John | Fenning | Headington RR | |
| Tim | Field | ||
| Cristina | Fisher | ||
| Kim | Forsyth | Thame Runners | |
| Jules | Fox | ||
| Kirstin | Fraser | ||
| Tais | Fukushima | ||
| Warren | Garcia | ||
| Patrick | Gardiner | ||
| Katherine | Garghan | ||
| Victoria | Gees-Thornton | On the Run Aylesbury | |
| Marco | Giacomelli | ||
| Louise | Gibson | On the Run Aylesbury | |
| Andy | Godman | Team Powerhouse | |
| Jo | Goldie-Brammer | Cross keys | |
| Kirsty | Goldie-Brammer | Cross keys | |
| micheal | goodman | ||
| Nick | Gowens | ||
| Tracey | Grannum-Harris | ||
| John | Green | Witney Road Runners | |
| Lewis | Greenall | ||
| Catherine | Grose | Team Powerhouse | |
| Katy | Groves | ||
| Fiona | Guy | ||
| Tom | Guy | ||
| David | Haggart | ||
| Zoe | Hall | ||
| Nathan | Hallett | ||
| Stephen | Harper | ||
| Matthew | Harper | ||
| Ben | Harris | ||
| Seamus | Harrison | Thame the Disc | |
| Stephen | Haynes | ||
| Robert | Head | ||
| Eloise | Hepple | ||
| Peter | Herring | ||
| Robert | Hill | ||
| Michelle | Hinde-Smith | ||
| Madelaine | Hodson | ||
| patrick | hogan | ||
| stuart | holding | ||
| Ben | Holland | ||
| Rebecca | Honour | On the Run Aylesbury | |
| Steven | Hopcroft | Alchester Running Club | |
| Michelle | Hopcroft | Oakley Runners | |
| Sharon | Houchin | Team Powerhouse | |
| Wayne | Houchin | Team Powerhouse | |
| Amy | Howard | ||
| david | hunt | ||
| tracy | hunt | ||
| Caroline | Hunter | ||
| Cosette | Jackson | ||
| Rachel | Jeacock | Kidlington Running Club | |
| Victoria | Jones | ||
| Laura | Jones | Team Thomley | |
| Jack | Keen | ||
| Sara | Kendrick | ||
| Emily | Kerrigan | ||
| Amy | Kerstein | ||
| Judy | King | Bearbrook Running Club | |
| Paul | Kittel | ||
| Michael | Knight | ||
| Sarah | Koch de Gooreynd | ||
| Simon | Lacey | ||
| Marcus | Lamb | ||
| Tracy | Lambert | ||
| Victoria | Lancaster | ||
| Ben | Langabeer | ||
| Amba | Latimer | Powerhouse Performance Club | |
| Andrew | Lawrence | ||
| Simon | Lazaruk | ||
| Sarah | Ledingham | Headington RR | |
| Christopher | Lembke | ||
| Mary | Lever | ||
| sheryl | lewis | ||
| Andrew | Lewis | ||
| Erica | Lewis | ||
| Julien | Lhomme | Headington RR | |
| Kate | Lichfield | ||
| Amy | Lodowski-Hilsdon | ||
| Graham | Lougher | Powerhouse Performance Club | |
| Liam | Louth | Powerhouse Performance Club | |
| Kerry | Lundy | ||
| Kay | Lydall | ||
| Lucy | Mason | ||
| Sophie | Massey | ||
| Richard | Mather | ||
| Christopher | Mauger | ||
| Jo | McGrath | ||
| Ben | McKeown | ||
| Steve | McKeown | ||
| Helen | Meredith | ||
| David | Meredith | ||
| William | Morris | ||
| Jonathan | Morris | ||
| Colin | Morton | Richardsons | |
| Alex | Moss | – | |
| Lesley | Mott | Peak Fitness | |
| Chris | NEASHAM | ||
| Coral | Needham | Team Powerhouse | |
| Kate | Newman | ||
| Thomas | Newman | ||
| Clare | Nickless | ||
| Alison | Noakes | ||
| Iain | Noakes | ||
| Michael | Oatway | ||
| Jade | O’brien | The James Figg | |
| Darren | Oliver | Powerhouse Performance Club | |
| Kate | Orwin | ||
| Hannah | Owen | ||
| Richard | Palmer | 100 Marathon Club | |
| Emma | Parfitt | ||
| Robin | Parish | ||
| Alice | Parsons | Witney Road Runners | |
| Ian | Pearce | ||
| Marigold | Peters | ||
| Jackie | Phippen | ||
| Joseph | Phippen | ||
| Barbara | Pollard | ||
| Hannah | Pope | ||
| Rebecca | Powell | ||
| Tom | Preskett | Woodstock Harriers AC | |
| Daniel | Preston | ||
| Karen | Price | Team Powerhouse | |
| Richard | Priest | ||
| Steve | Priestnall | ||
| Samantha | Probets | ||
| Lowri | Puttick | ||
| Tania | Quezado | ||
| Lu | Rahman | Kidlington Running Club | |
| Rachel | Rahman | Kidlington Running Club | |
| Ian | Ralls | CPM | |
| Ben | Reeve | ||
| John | Reilly | ||
| Tanya | Rice | ||
| Jonathan | Rice | ||
| Ian | Roberts | On the Run Aylesbury | |
| Amy | Roberts | ||
| Alun | Rowe | ||
| seamus | russell | ||
| Kerry | Scott | ||
| Richard | Scott | ||
| joshua | scott | Powerhouse Performance Club | |
| joanne | scrivener | Powerhouse | |
| Deb | Smith | ||
| James | Smith | ||
| Luke | Smith | ||
| Joanne | Smith | Kidlington Running Club | |
| Clare | Smith | ||
| Alistair | Smith | Frome Running Club | |
| Gareth | Snelson | Redway Runners | |
| Lucy | Spanswick | Cross keys | |
| Robert | Sparks | ||
| Vivienne | Sparks | ||
| Becky | Spencer-Davies | ||
| Drew | Spicer | ||
| Rachel | Stafford | Indies Thame Runners | |
| Kayleigh | Stanbury | ||
| Laura | Standen | ||
| Philippa | Stenning | ||
| Amanda | Stevens | ||
| James | Stevens | ||
| Lisa | Stevens | ||
| Sonia | Storey | Cuddington Runners | |
| Paul | Storey | Cuddington Runners | |
| Emily | Stringfellow | ||
| Anna | Subesinghe | ||
| Adrian | Summons | ||
| Louis | Summons | ||
| Nicky | Tanner | ||
| Tracey | Tasker | ||
| Andrew | Tattersfield | ||
| helen | taylor | ||
| Derek | Taylor | ||
| Yee-King | Tham | ||
| Richard | Thompson | ||
| Jocky | Threlfall | ||
| Tom | Threlfall | ||
| Mark | Timson | ||
| Emma | Timson | ||
| Fiona | Toney | ||
| Andrew | Trainer | ||
| Matthew | Travers | ||
| simon | tremlin | ||
| kate | tremlin | ||
| charlotte | tremlin | ||
| Gareth | Tupper | ||
| Callum | Turns | ||
| Nicky | Wade | ||
| Catherine | Wainwright | White Horse Harriers | |
| Jack | Wallace | ||
| Christopher | Walton | ||
| Roger | Ward | ||
| Sharon | Warner | ||
| David | Watkins | ||
| Jo | Webb | Sandman Striders | |
| Daniel | Weller | ||
| Sarah | Whatman | ||
| Dominic | Whatman | ||
| Daniel | Whiting | ||
| Lawrence | Wiffin | ||
| Martyn | Wiggins | Team Thomley | |
| Sarah | Williams | ||
| Robert | Williams | ||
| Simon | Willis | Lucy Electric | |
| Wendy | Wilson | ||
| Guy | Wilson | ||
| Natalie | Wood | ||
| Alan | Wood | ||
| Chloe | Wood | ||
| Abi | Woodliffe-Thomas | ||
| Richard | Worker | ||
| David | Wright | David Wright | |
| Sarah | Wythe |