Below is a list of runners who have reached 100 marathons in 2009 along with the event and date this milestone was reached.
| Jarlath Fitzgerald | 06-Dec-09 | Barbados Marathon |
| Gareth R Davies | 01-Nov-09 | New York Marathon |
| Carol Ann Plater | 18-Oct-09 | Abingdon Marathon |
| Simon Illingworth | 13-Sep-09 | Robin Hood Marathon |
| Melanie Johnstone | 13-Sep-09 | Moray Marathon |
| Roger Bradley | 12-Sep-09 | Medoc Marathon |
| Steve Suttle | 06-Sep-09 | Kent Coastal Marathon |
| Carla Hayes | 09-Aug-09 | Isle of Man Marathon |
| Ian Sharman | 25-Jul-09 | Swiss Alpine 78km |
| Jim McKellar | 19-Jul-09 | Fairlands Valley Challenge |
| Mike Quick | 19-Jul-09 | Fairlands Valley Challenge |
| Andy Stalley | 20-Jun-09 | Trionium Picnic |
| Ruth Benzimra | 17-May-09 | Windermere Marathon |
| Michael Grehan | 10-May-09 | Halstead Marathon |