| Bibno. | Participant | Category | Country | Distance |
|---|---|---|---|---|
| 500 | Adam Keely | (M) Senior |  | 10k |
| 518 | Adam Maclean | (M) Senior | | 10k |
| 99 | Adam Spruce | (M) Senior | | Triathlon |
| 576 | Adriana Anghel | (F) Senior | | 10k |
| 1 | Adriana Micu | (F) Senior | | Triathlon |
| 425 | Agnelo de Araujo | (M) Senior | | 5k |
| 109 | Aidan Peppin | (M) Senior | | Triathlon |
| 353 | Aiden McGuirk | (M) Senior | | Triathlon |
| 3 | Alan Durrans | (M) Veteran 40 | | Triathlon |
| 257 | Alejandro de Miguel Solano | (M) Senior | | Triathlon |
| 4 | Alex Holzer | (F) Veteran 50 | | Triathlon |
| 293 | Alex Morley | (M) Senior | | Triathlon |
| 150 | Alex Williams | (M) Senior | | Triathlon |
| 115 | Alexander McKinlay | (M) Veteran 50 | | Triathlon |
| 341 | Alexander Tough | (M) Senior | | Triathlon |
| 440 | Alexander Vincent | (M) Senior | | 5k |
| 215 | Alice Deller | (F) Senior | | Triathlon |
| 505 | Alice Tate | (F) Senior | | 10k |
| 266 | Alicia Fuller | (F) Senior | | Triathlon |
| 233 | Alison Sneddon | (F) Senior | | Triathlon |
| 318 | Alistair Wilson | (M) Senior | | Triathlon |
| 527 | Amanda Barton-Skeates | (F) Veteran 50 | | 10k |
| 523 | Amanda Browne | (F) Veteran 40 | | 10k |
| 172 | Amanda Mitchell | (F) Veteran 40 | | Triathlon |
| 333 | Amanda Thomas | (F) Senior | | Triathlon |
| 112 | Amanda-Jane Powell | (F) Veteran 40 | | Triathlon |
| 407 | Amandeep Thiara | (F) Senior | | 5k |
| 536 | Amar Sohal | (M) Senior | | 10k |
| 167 | Amdadul Rahman | (M) Senior | | Triathlon |
| 307 | Amie Buttle | (F) Senior | | Triathlon |
| 568 | Amir Wagenstein | (M) Veteran 40 | | 10k |
| 103 | Amrit Jagpal | (F) Senior | | Triathlon |
| 252 | Amy Misson | (F) Veteran 40 | | Triathlon |
| 67 | Amy Morrison-Smith | (F) Senior | | Triathlon |
| 25 | Andrea Butcher | (F) Veteran 40 | | Triathlon |
| 28 | Andrea Frino | (M) Veteran 40 | | Triathlon |
| 159 | Andrew Brown | (M) Veteran 40 | | Triathlon |
| 137 | Andrew Gosnold | (M) Senior | | Triathlon |
| 540 | Andrew Himsley | (M) Senior | | 10k |
| 61 | Andrew Humphries | (M) Veteran 40 | | Triathlon |
| 51 | Andrew Jenkinson | (M) Senior | | Triathlon |
| 559 | Andrew Lowe | (M) Veteran 50 | | 10k |
| 20 | Andrew Medlock | (M) Veteran 40 | | Triathlon |
| 533 | Andrew Taylor | (M) Veteran 40 | | 10k |
| 270 | Andy Gajraj | (M) Veteran 50 | | Triathlon |
| 299 | Andy James | (M) Veteran 50 | | Triathlon |
| 128 | Ann McManus | (F) Senior | | Triathlon |
| 378 | Anna Harrison | (F) Senior | | Triathlon |
| 388 | Anne Marie Smith | (F) Veteran 40 | | Triathlon |
| 546 | Annika Cederberg | (F) Senior | | 10k |
