| Milestone | Name | Date | Event |
| 100 Ultras | Sarah Marshall | 11-Feb-23 | Phoenix Monkey Run |
| 100 Ultras | Apryl Hammett | 12-Feb-23 | Hare & Tortoise Rayning Anniversary |
| 200 Marathons/Ultras | John Whitcher | 25-Feb-23 | SVN Chinese New Year |
| 300 Marathons/Ultras | Dawn Davis | 26-Feb-23 | SVN Marathon Day |
| 400 Marathons/Ultras | Ellen Cottom | 01-Mar-23 | Saturn Teenage Mutant Ninja run |
| 300 Marathons/Ultras | Sarah Marshall | 04-Mar-23 | Phoenix Spring Marathon |
| 200 Marathons/Ultras | Colin Johnstone | 08-Mar-23 | Enigma Week At The Knees Day 3 |
| 500 Marathons/Ultras | Gary Wade | 25-Mar-23 | Gin Pit |
| 300 Ultras | Robert Cameron-Wood | 01-Apr-23 | Testway 50 |
| 200 Marathons/Ultras | David Joynson | 02-Apr-23 | Paris |
| 50 Counties | Costas Flevas | 08-Apr-23 | Rose of the Shires |
| 100 Ultras | Amy Lomax | 10-Apr-23 | Phoenix TiT Day 10 |
| 400 Marathons/Ultras | Melanie Johnstone | 16-Apr-23 | Manchester |
| 200 Marathons/Ultras | Gill Mitchell | 16-Apr-23 | Manchester |
| 300 Marathons/Ultras | Elaine McAnulty | 16-Apr-23 | We Run Wild April Showers |
| 200 Ultras | Bryan Darney | 22-Apr-23 | The Smugglers Way |
| 300 Marathons/Ultras | Theresa Massey | 23-Apr-23 | London |
| 100 Ultras | Roz Glover | 06-May-23 | The Bridge 100 |
| 900 Marathons/Ultras | Collette O'Hagan | 20-May-23 | Baronscourt Endurance & 12hr Challenge |
| 600 Marathons/Ultras | Andrew Bickle | 20-May-23 | Race The Tide |
| 200 Marathons/Ultras | Pam Philpot | 27-May-23 | SVN Le Mans Challenge |
| 1200 Marathons/Ultras | Martin Richard Bush | 28-May-23 | Saturn Teenage Mutant Ninja Runners |
| 800 Marathons/Ultras | Denys Baudry | 04-Jun-23 | ZigZag Circ Du Sore Legs |
| 200 Marathons/Ultras | Jayne Woodhouse | 18-Jun-23 | Hampshire Hoppit |
| 200 Marathons/Ultras | David Bird | 16-Jul-23 | Wye Valley Tunnel |
| 400 Marathons/Ultras | Chrissy Gorham | 23-Jul-23 | Saturn 9in9 Day 9 |
| 300 Marathons/Ultras | Michaela Sanders | 30-Jul-23 | ZigZag 10in10 Day9 The Gallops |
| 1000 Marathons/Ultras | Steve Edwards | 30-Jul-23 | Saturn I believe In Bru |
| 800 Marathons/Ultras | David Moles | 04-Aug-23 | Saturn Hawaii 5-O |
| 1200 Marathons/Ultras | Nick Nicholson | 05-Aug-23 | Lake Orta Day 1 |
| 100 Road Marathons | Nick Nicholson | 12-Aug-23 | Lake Orta Day 8 |
| Triple Crown 100/100/100 | Nick Nicholson | 12-Aug-23 | Lake Orta Day 8 |
| 400 Marathons/Ultras | Nick Cockburn | 13-Aug-23 | PFW Ribblefest |
| 100 Road Marathons | Andrew Coveney | 13-Aug-23 | Lake Orta Day 9 |
| Triple Crown 100/100/100 | Andrew Coveney | 13-Aug-23 | Lake Orta Day 9 |
| 100 Road Marathons | Robert Cameron Wood | 20-Aug-23 | Quadrathon Day 4 Muff Marathon |
| Triple Crown 100/100/100 | Robert Cameron Wood | 20-Aug-23 | Quadrathon Day 4 Muff Marathon |
| 700 Marathons/Ultras | Eugene Winters | 20-Aug-23 | Quadrathon Day 4 |
| 100 Ultras | Karen Hamilton | 20-Aug-23 | SVN Adventures In Middle Earth Day 2 |
| 300 Marathons/Ultras | Karen Hamilton | 20-Aug-23 | SVN Adventures In Middle Earth Day 2 |
| 400 Marathons/Ultras | Phil Adams | 24-Aug-23 | Phoenix Jubilee River Run 4 |
| 200 Marathons/Ultras | Rachel Smith | 25-Aug-23 | SVN Adventures in Middle Earth Day 7 |
| 300 Marathons/Ultras | Ollie Dawson | 26-Aug-23 | Summer Green Man Ultra |
| 200 Marathons/Ultras | Ingrid Harris | 27-Aug-23 | Phoenix Prosecco Run |
| 100 Ultras | Helen James | 01-Sep-23 | Phoenix Track Wars |
| 400 Marathons/Ultras | Vanessa Brewster | 01-Sep-23 | Phoenix Track Wars (Afternoon) |
| 300 Marathons/Ultras | Paul Davies | 23-Sep-23 | AGM Marathon |
| 200 Ultras | Elaine Dean | 23-Sep-23 | LDWA Sussex Stride |
| 100 Road Marathons | Paul Sutherland | 01-Oct-23 | Bedford Autodrome |
| 300 Marathons/Ultras | Gary Dixon | 08-Oct-23 | Chester |
| 100 Road Marathons | Melanie Johnstone | 15-Oct-23 | Chelmsford |
| 100 Ultras | Andrew Bickle | 15-Oct-23 | Dorset Hillfort Ultra |
| Triple Crown | Andrew Bickle | 15-Oct-23 | Dorset Hillfort Ultra |
| 300 Marathons/Ultras | Amy Lomax | 21-Oct-23 | LDWA Founders Challenge |
| 100 Road Marathons | Stephen Cooney | 22-Oct-23 | Battersea Park |
| 600 Marathons/Ultras | Sam Brown | 29-Oct-23 | Run Believable Halloween Challenge |
| 200 Marathons/Ultras | Jane Lightfoot | 29-Oct-23 | CODrc November Nightmare Day 2 |
| 200 Marathons/Ultras | Richard Kell | 12-Nov-23 | Athens |
| 900 Marathons/Ultras | Elaine Dean | 12-Nov-23 | Xnrg Druids Challenge Day 3 |
| 400 Marathons/Ultras | Stephen Wakeford | 24-Nov-23 | SVN Space Cowboy Day1- Mercury |
| 300 Marathons/Ultras | Lucy Fern | 03-Dec-23 | ZigZag Bauble Bimble |