| Bibno. | Participant | Category | Country | Distance |
|---|---|---|---|---|
| Sean Norris | (M) Open |  | Re-register Lakeland 50 2020 | |
| Sean O'brien | (M) Veteran50 | | Re-register Lakeland 50 2020 | |
| Sean Read | (M) Veteran50 | | Re-register Lakeland 50 2020 | |
| Sean Rooney | (M) Veteran50 | | Re-register Lakeland 50 2020 | |
| Sebastien Betouret | (M) Veteran40 | | Re-register Lakeland 100 2020 | |
| Seema Ritson | (F) Veteran40 | | Re-register Lakeland 50 2020 | |
| Senthil Murugesan | (M) Veteran40 | | Re-register Lakeland 50 2020 | |
| Shane Cliffe | (M) Veteran50 | | Montane Lakeland 100 | |
| Shane Harris | (M) Veteran50 | | Montane Lakeland 50 | |
| Shane O'Donoghue | (M) Veteran60 | | Re-register Lakeland 50 2020 | |
| Shaneen Platten | (F) Veteran40 | | Re-register Lakeland 100 2020 | |
| Anonymous Participant | (F) Open | | Re-register Lakeland 100 2020 | |
| Sharon Bebington | (F) Veteran40 | | Re-register Lakeland 50 2020 | |
| Sharon Bianchi | (F) Veteran40 | | Re-register Lakeland 50 2020 | |
| Sharon Bullock | (F) Veteran40 | | Montane Lakeland 50 | |
| Sharon Duthie | (F) Veteran50 | | Re-register Lakeland 50 2020 | |
| Sharon Hambley | (F) Veteran50 | | Re-register Lakeland 50 2020 | |
| Sharon Law | (F) Veteran40 | | Re-register Lakeland 100 2020 | |
| Sharon Matthews | (F) Veteran40 | | Montane Lakeland 100 | |
| Sharon Wherry | (F) Veteran50 | | Re-register Lakeland 100 2020 | |
| Shaun Burgess | (M) Veteran40 | | Re-register Lakeland 50 2020 | |
| Shaun Cleary | (M) Open | | Re-register Lakeland 50 2020 | |
| Shaun Green | (M) Veteran50 | | Montane Lakeland 50 | |
| Shaun Layton | (M) Veteran50 | | Re-register Lakeland 50 2020 | |
| Shaun Mc Farlane | (M) Veteran50 | | Re-register Lakeland 100 2020 | |
| Shaun McGlynn | (M) Veteran40 | | Re-register Lakeland 100 2020 | |
| shaun Taylor Taylor | (M) Veteran40 | | Re-register Lakeland 50 2020 | |
| Sheila Drake | (F) Veteran50 | | Re-register Lakeland 50 2020 | |
| Sheila Whitfield | (F) Veteran60 | | Re-register Lakeland 50 2020 | |
| Sheldon Cockburn | (M) Veteran40 | | Montane Lakeland 100 | |
| Shelley Gooch-Smith | (F) Veteran40 | | Re-register Lakeland 50 2020 | |
| Shelley Green | (F) Veteran40 | | Re-register Lakeland 50 2020 | |
| Si Ord | (M) Veteran50 | | Re-register Lakeland 50 2020 | |
| Sian King | (F) Open | | Montane Lakeland 50 | |
| Sian Roberts | (F) Open | | Re-register Lakeland 50 2020 | |
| Silvia Delgado Ortiz | (F) Veteran40 | | Re-register Lakeland 100 2020 | |
| Simon Ackerley | (M) Veteran50 | | Re-register Lakeland 100 2020 | |
| Simon Alcock | (M) Veteran50 | | Re-register Lakeland 50 2020 | |
| Simon Austin | (M) Open | | Re-register Lakeland 100 2020 | |
| Simon Blackman | (M) Veteran40 | | Re-register Lakeland 50 2020 | |
| Simon Bourne | (M) Veteran50 | | Re-register Lakeland 100 2020 | |
| Simon Brookes | (M) Open | | Re-register Lakeland 100 2020 | |
| Simon Cocks | (M) Open | | Montane Lakeland 50 | |
| Simon Darmody | (M) Veteran40 | | Montane Lakeland 100 | |
| simon denton | (M) Veteran40 | | Re-register Lakeland 50 2020 | |
| Simon Devereux | (M) Veteran50 | | Re-register Lakeland 50 2020 | |
| Simon Dolman | (M) Veteran40 | | Re-register Lakeland 50 2020 | |
| Simon Eaton | (M) Veteran50 | | Re-register Lakeland 50 2020 | |
| Simon Fleming | (M) Veteran70 | | Montane Lakeland 50 | |
| Simon Foster | (M) Veteran50 | | Re-register Lakeland 100 2020 |
