| Bibno. | Participant | Category | Country | Distance |
|---|---|---|---|---|
| Alec Sutton | (M) Veteran40 |  | Montane Lakeland 50 | |
| Alejandra Aranceta | (F) Open | | Montane Lakeland 50 | |
| Alessandra Di Vincenzo | (F) Open | | Montane Lakeland 50 | |
| Alex Armstrong | (M) Open | | Re-register Lakeland 50 2020 | |
| Alex Baker | (M) Open | | Montane Lakeland 50 | |
| Alex Ball | (M) Veteran50 | | Montane Lakeland 50 | |
| Alex Cann | (M) Open | | Re-register Lakeland 50 2020 | |
| Alex Copley | (M) Open | | Montane Lakeland 50 | |
| Alex Daffern | (M) Open | | Montane Lakeland 50 | |
| Alex Erskine | (M) Open | | Re-register Lakeland 50 2020 | |
| Alex Grovit | (M) Veteran40 | | Montane Lakeland 50 | |
| Alex Hocking | (M) Veteran40 | | Montane Lakeland 50 | |
| Alex Maddocks | (M) Open | | Montane Lakeland 50 | |
| Alex Old | (M) Open | | Re-register Lakeland 50 2020 | |
| Alexander Buccellato | (M) Veteran40 | | Montane Lakeland 50 | |
| Alexander Gordon | (M) Open | | Montane Lakeland 50 | |
| Alexander Visram | (M) Veteran50 | | Re-register Lakeland 100 2020 | |
| Alexandra Duesbury | (F) Open | | Re-register Lakeland 50 2020 | |
| Alexandra Malbon | (F) Open | | Montane Lakeland 50 | |
| Alison Birkett | (F) Veteran50 | | Re-register Lakeland 50 2020 | |
| Alison Caldwell | (F) Open | | Re-register Lakeland 100 2020 | |
| Alison Kirby | (F) Veteran40 | | Re-register Lakeland 50 2020 | |
| Alison Mawson | (F) Open | | Re-register Lakeland 100 2020 | |
| Alison Pattison | (F) Veteran50 | | Re-register Lakeland 50 2020 | |
| Alison Phillips | (F) Veteran50 | | Re-register Lakeland 50 2020 | |
| Alison Smith | (F) Open | | Re-register Lakeland 50 2020 | |
| Alistair Dinmore | (M) Veteran50 | | Montane Lakeland 50 | |
| Alistair Exon | (M) Veteran50 | | Re-register Lakeland 100 2020 | |
| Alistair Flowers | (M) Open | | Re-register Lakeland 50 2020 | |
| Alistair Gillan | (M) Veteran50 | | Re-register Lakeland 100 2020 | |
| Alix Almond | (F) Veteran40 | | Re-register Lakeland 50 2020 | |
| Allan Connolly | (M) Veteran40 | | Montane Lakeland 50 | |
| allan Higgins | (M) Veteran40 | | Montane Lakeland 50 | |
| Allan Sumner | (M) Veteran50 | | Re-register Lakeland 50 2020 | |
| ALLY jackson | (M) Veteran50 | | Re-register Lakeland 100 2020 | |
| Alun Rees | (M) Veteran40 | | Re-register Lakeland 50 2020 | |
| Alyssa Lloyd | (F) Open | | Re-register Lakeland 50 2020 | |
| Amanda Heaton | (F) Veteran40 | | Re-register Lakeland 50 2020 | |
| Amanda Kirtley | (F) Veteran50 | | Re-register Lakeland 100 2020 | |
| Amanda Smith | (F) Veteran50 | | Re-register Lakeland 50 2020 | |
| Amanda Waller | (F) Veteran40 | | Re-register Lakeland 50 2020 | |
| Amanda Young | (F) Veteran40 | | Montane Lakeland 50 | |
| Amelia Churnside | (F) Open | | Montane Lakeland 50 | |
| Ami Finnamore | (F) Open | | Re-register Lakeland 50 2020 | |
| Amy Blackburn | (F) Open | | Re-register Lakeland 100 2020 | |
| Amy Grace | (F) Open | | Montane Lakeland 100 | |
| Amy Naylor | (F) Veteran40 | | Re-register Lakeland 50 2020 | |
| Amy Worrall | (F) Veteran40 | | Re-register Lakeland 50 2020 | |
| Andrea Lawton-hyde | (F) Veteran40 | | Re-register Lakeland 100 2020 | |
| Andrea Muirhead | (F) Veteran40 | | Re-register Lakeland 50 2020 |
