Registered Testing Pool (RTP)
| Athlete | Discipline | Secondary Discipline | World Athletics ID | Gender | Nationality | Date of Birth |
|---|---|---|---|---|---|---|
| Juleisy ANGULO | Javelin | Throws | 14718123 | F | ECU | 2001-01-02 |
| Julian WEBER | Javelin | Throws | 14420076 | M | GER | 1994-08-29 |
| Julien ALFRED | 100m | Sprints (400m or less) | 14646562 | F | LCA | 2001-06-10 |
| Julius YEGO | Javelin | Throws | 14376567 | M | KEN | 1989-01-04 |
| Just KWAOU-MATHEY | 110m Hurdles | Sprints (400m or less) | 14734289 | M | FRA | 1999-12-04 |
| JuVaughn HARRISON | High Jump | Jumps | 14785286 | M | USA | 1999-04-30 |
| Karsten WARHOLM | 400m Hurdles | Sprints (400m or less) | 14479487 | M | NOR | 1996-02-28 |
| Kasanesh BAZE | Marathon | Long Distance (3000m+) | 15049168 | F | ETH | 1999-10-23 |
| Katarina JOHNSON-THOMPSON | Heptathlon | Combined Events | 14276543 | F | GBR | 1993-01-09 |
| Kate O'CONNOR | Heptathlon | Combined Events | 14759587 | F | IRL | 2000-12-12 |
| Katie MOON | Pole Vault | Jumps | 14373744 | F | USA | 1991-06-13 |
| Kayinsola AJAYI | 100m | Sprints (400m or less) | 14976296 | M | NGR | 2004-09-14 |
| Keely HODGKINSON | 800m | Middle Distance (800m-1500m) | 14642894 | F | GBR | 2002-03-03 |
| Kemi ADEKOYA | 400m Hurdles | Sprints (400m or less) | 14419510 | F | BRN | 1993-01-16 |
| Kena TUFA | 3000m SC | Long Distance (3000m+) | 15024115 | F | ETH | 2026-12-27 |
| Keneth KIPROP | 10000m | Long Distance (3000m+) | 15041078 | M | UGA | 2005-05-13 |
| Kennedy KIMUTAI | Marathon | Long Distance (3000m+) | 14847931 | M | KEN | 1999-06-03 |
| Kenneth BEDNAREK | 200m | Sprints (400m or less) | 14715244 | M | USA | 1998-10-14 |
| Keshorn WALCOTT | Javelin | Throws | 14376122 | M | TTO | 1993-04-02 |
| Khairi BEJIGA | 10000m | Long Distance (3000m+) | 15156595 | M | ETH | 2006-04-27 |
| Kimberly GARCÍA LEÓN | 20km Walk | Long Distance (3000m+) | 14293276 | F | PER | 1993-10-19 |
| Kirani JAMES | 400m | Sprints (400m or less) | 14195659 | M | GRN | 1992-09-01 |
| Kishane THOMPSON | 100m | Sprints (400m or less) | 14738009 | M | JAM | 2001-07-17 |
| Koki IKEDA | 20km Walk | Long Distance (3000m+) | 14743364 | M | JPN | 1998-05-03 |
| Krista TERVO | Hammer | Throws | 14592895 | F | FIN | 1997-11-15 |
RTP - useful information
Learn more about out of competition testing, the process and what to expect and do below.