| Bibno. | Participant | Category | Country | Distance |
|---|---|---|---|---|
| 391 | Robyn Hamer | (F) Senior |  | Oxford vs Cambridge |
| 312 | Robyn North | (F) Senior | | Triathlon |
| 747 | Roisin Parry | (F) U20 | | 10k |
| 431 | Rory Fairhead | (M) Senior | | Oxford vs Cambridge |
| 737 | Rory Nosworthy | (M) Senior | | 10k |
| 320 | Rosie Williams | (F) Veteran 50 | | Triathlon |
| 830 | Rosy Lord | (F) Senior | | 10k |
| 330 | Royston Rodrigues | (M) Senior | | Triathlon |
| 648 | Rozanne Scholtz | (F) Senior | | 5k |
| 71 | Rumit Desai | (M) Senior | | Triathlon |
| 220 | Rupert Houlton | (M) Senior | | Triathlon |
| 33 | Russell Jackson | (M) Senior | | Triathlon |
| 789 | Ruth Cheung | (F) Veteran 40 | | 10k |
| 120 | Ryan Kelly | (M) Veteran 40 | | Triathlon |
| 731 | S Bravery | (M) Veteran 50 | | 10k |
| 630 | Sadaf Aryan | (F) Junior | | 5k |
| 428 | Salvador Rocha Folque De Mendoca | (M) Senior | | Oxford vs Cambridge |
| 193 | Sam Bullen | (M) Senior | | Triathlon |
| 654 | Sam Evans | (M) Senior | | 5k |
| 473 | Sam Hayward | (M) Senior | | Triathlon |
| 352 | Sam Horsfall | (F) Senior | | Triathlon |
| 55 | Sam Mellor | (M) Senior | | Triathlon |
| 201 | Sam Shopland | (M) Veteran 40 | | Triathlon |
| 705 | Samantha Man | (F) Senior | | 10k |
| 293 | Samuel Rigolot | (M) Veteran 40 | | Triathlon |
| 217 | Sandra Hunter | (F) Veteran 40 | | Triathlon |
| 10 | Sandra Scaplehorn | (F) Veteran 40 | | Triathlon |
| 368 | Sara Handford | (F) Veteran 50 | | Triathlon |
| 152 | Sara Lemos | (F) Senior | | Triathlon |
| 237 | Sarah Coupe | (F) Senior | | Triathlon |
| 133 | Sarah Foister | (F) Senior | | Triathlon |
| 423 | Sarah Jones | (F) Senior | | Oxford vs Cambridge |
| 93 | Sarah Lockington | (F) Veteran 40 | | Triathlon |
| 783 | Sarathi Balasundaram | (M) Veteran 40 | | 10k |
| 319 | Sarvesh Bhayani | (M) Senior | | Triathlon |
| 175 | Saul Caroto | (M) Veteran 40 | | Triathlon |
| 189 | Scott Handley | (M) Senior | | Triathlon |
| 228 | Scott Smith | (M) Senior | | Triathlon |
| 43 | Scott Weston | (M) Veteran 40 | | Triathlon |
| 422 | Seren Waite | (F) Senior | | Oxford vs Cambridge |
| 646 | Shannon Bedford | (F) Senior | | 5k |
| 52 | Sheila Watts | (F) Veteran 50 | | Triathlon |
| 323 | Sian Shaw | (F) Senior | | Triathlon |
| 381 | Simon Bevan | (M) Senior | | Oxford vs Cambridge |
| 317 | Simon Coleman | (M) Senior | | Triathlon |
| 246 | Simon Leadbeater | (M) Veteran 50 | | Triathlon |
| 232 | Simon Renfrey | (M) Veteran 50 | | Triathlon |
| 257 | Simon Wilson | (M) Senior | | Triathlon |
| 366 | Sophia Vorderwuelbecke | (F) Senior | | Triathlon |
| 30 | Sophie Barton | (F) Senior | | Triathlon |
