| Sex | Athlete | DOB | Discipline | Round | POS | Mark |
|---|---|---|---|---|---|---|
| W | June Arbeo | 04/02/1999 | 3000 Metres Steeplechase | Heats | 12 | 10:38.52 |
| M | Enrique Herreros | 15/09/1999 | 1500 Metres | Heats | 5 | 3:46.66 |
| W | María Lasa | 14/05/2000 | 800 Metres | Heats | 6 | 2:12.04 |
| M | Joan Martinez | 14/06/1999 | 100 Metres | Heats | 4 | 10.67 |
| W | Alicia Raso | 26/08/1999 | Pole Vault | Qualification | 9 | 3.95 |
| M | Eduardo Menacho | 25/11/1999 | 10,000 Metres | Final | 15 | 30:52.26 |
| Sex | Athlete | DOB | Discipline | Round | POS | Mark |
|---|---|---|---|---|---|---|
| M | Luis Salort | 26/07/1999 | 110m Hurdles (99.0cm) | Heats | 1 | 13.66 |
| W | Sara Gallego | 11/10/2000 | 400 Metres Hurdles | Heats | 2 | 58.27 |
| M | Alfredo Jimenez | 21/03/1999 | 400 Metres | Heats | 3 | 47.12 |
| M | Aimar-Genís Palma | 17/07/1999 | Hammer Throw (6kg) | Qualification | 9 | 67.74 |
| W | Patricia Urquía | 19/01/1999 | 100 Metres | Heats | 3 | 11.66 |
| M | Luis Salort | 26/07/1999 | 110m Hurdles (99.0cm) | Semi-Final | DQ | |
| M | José Antonio Maldonado | 01/12/1999 | Pole Vault | Qualification | 6 | 5.10 |
| M | Sergio López | 05/07/1999 | 100 Metres | Semi-Final | 6 | 10.53 |
| W | Cristina Ruiz | 16/01/1999 | 3000 Metres | Final | 9 | 9:13.75 |
| Sex | Athlete | DOB | Discipline | Round | POS | Mark |
|---|---|---|---|---|---|---|
| W | Claudia Conte | 14/11/1999 | 100 Metres Hurdles | Heptathlon | 1 | 14.47 |
| W | Gema Marti | 19/07/2000 | Hammer Throw | Qualification | 7 | 56.01 |
| M | Carlos MUÑOZ | 19/05/1999 | 3000 Metres Steeplechase | Heats | 14 | 9:41.66 |
| W | Claudia Conte | 14/11/1999 | High Jump | Heptathlon | 4 | 1.77 |
| M | Aleix Porras | 11/09/1999 | 400 Metres Hurdles | Heats | 4 | 51.83 |
| M | Juan González | 26/01/2000 | 200 Metres | Heats | 6 | 21.34 |
| W | Claudia Conte | 14/11/1999 | Shot Put | Heptathlon | 4 | 11.55 |
| W | Patricia Urquía | 19/01/1999 | 100 Metres | Semi-Final | 7 | 11.90 |
| W | Meritxell Benito | 25/09/1999 | Pole Vault | Final | 12 | 4.00 |
| M | Juan González | 26/01/2000 | 200 Metres | Semi-Final | 7 | 21.36 |
| W | Sara Gallego | 21/10/2000 | 400 Metres Hurdles | Semi-Final | 2 | 57.18 |
| W | Claudia Conte | 14/11/1999 | 200 Metres | Heptathlon | 2 | 25.68 |
| M | Alfredo Jimenez | 21/03/1999 | 400 Metres | Semi-Final | 5 | 46.93 |
| M | Pablo López | 14/03/2000 | High Jump | Qualification | 8 | 2.05 |
| M | Enrique Llopis | 15/10/2000 | 110m Hurdles (99.0cm) | Final | DNF |
| Sex | Athlete | DOB | Discipline | Round | POS | Mark |
|---|---|---|---|---|---|---|
| W | Claudia Conte | 14/11/1999 | Long Jump | Heptathlon | 8 | 5.81 |
| M | Eduardo Romero | 27/01/1999 | 800 Metres | Heats | 4 | 1:49.56 |
| W | Águeda MUÑOZ | 19/03/1999 | 1500 Metres | Heats | 14 | 4:30.63 |
| W | Jaël-Sekura Bestue | 24/09/2000 | 200 Metres | Heats | 3 | 23.70 |
| W | Claudia Conte | 14/11/1999 | Javelin Throw | Heptathlon | 10 | 40.12 |
| M | Spain U20 | 01/01/1900 | 4x100 Metres Relay | Heats | 4 | 39.99 |
| W | Claudia Conte | 14/11/1999 | 800 Metres | Heptathlon | 2 | 2:20.40 |
| M | Aleix Porras | 11/09/1999 | 400 Metres Hurdles | Semi-Final | DNS | |
| W | Jaël-Sekura Bestue | 24/09/2000 | 200 Metres | Semi-Final | 5 | 23.68 |
| W | Sara Gallego | 21/10/2000 | 400 Metres Hurdles | Final | 4 | 57.11 |
| M | Pol Retamal | 16/03/1999 | 200 Metres | Final | 4 | 20.85 |
| Sex | Athlete | DOB | Discipline | Round | POS | Mark |
|---|---|---|---|---|---|---|
| M | Aarón Solà | 01/07/1999 | Discus Throw (1.750kg) | Qualification | 13 | 53.41 |
| W | Antia Chamosa | 07/10/1999 | 10,000 Metres Race Walk | Final | 17 | 48:34.50 |
| M | José Manuel Pérez | 10/09/1999 | 10,000 Metres Race Walk | Final | 15 | 42:41.26 |
| M | José Antonio Maldonado | 01/12/1999 | Pole Vault | Final | 12 | 5.05 |
| M | Aarón Las Heras | 22/06/2000 | 5000 Metres | Final | 12 | 14:30.09 |
| M | Spain U20 | 01/01/1900 | 4x100 Metres Relay | Final | 6 | 39.86 |