| Heats: 2 |
| # | Result | Name | Team | |
|---|---|---|---|---|
| HEAT 1 / 2 | ||||
| 8 | PB | 44.34 | Maja Felby (2002) | DEN-Køge Atletik |
| 9 | 44.42 | Mathilde Pedersen (2002) | DEN-Vejle IF | |
| 10 | 45.49 | Ida Marie Hartmann (2002) | DEN-Aarhus 1900 | |
| 12 | 46.46 | Unna Ró (2002) | DEN-Hvidovre AM | |
| 13 | 46.77 | Cecilie Carlsen (2003) | DEN-Odense Atletik | |
| 14 | 47.63 | Annika G Truelsen (2003) | DEN-Sparta | |
| HEAT 2 / 2 | ||||
| 1 | 41.79 | Sarah Sækmose (2002) | DEN-Vejle IF | |
| 2 | SB | 42.69 | Cecilie Gedsø Færge (2003) | DEN-Ballerup AK |
| 3 | 42.88 | Louise Høkilde Wassmann (2003) | DEN-Greve Atletik | |
| 4 | 43.00 | Majken Lützen (2003) | DEN-Ballerup AK | |
| 5 | 43.19 | Sofie Spiegelhauer (2002) | DEN-Sparta | |
| 6 | 43.34 | Carla Nørremark (2002) | DEN-Hvidovre AM | |
| 7 | 43.96 | Mille B. Olesen (2002) | DEN-Aalborg AM | |
| 11 | 46.21 | Maria Biskopstø (2002) | DEN-Vejle IF | |
| # | Q | Name | Team | BibNo | PB | SB | |
|---|---|---|---|---|---|---|---|
| HEAT 1 / 2 | |||||||
| 3 | 46.57 | Annika G Truelsen (2003) | DEN-Sparta | 345 | 46.57 | 46.57 | |
| 4 | 44.79 | Ida Marie Hartmann (2002) | DEN-Aarhus 1900 | 531 | 44.79 | 44.79 | |
| 5 | 44.17 | Mathilde Pedersen (2002) | DEN-Vejle IF | 454 | 44.17 | ||
| 6 | 45.02 | Cecilie Carlsen (2003) | DEN-Odense Atletik | 248 | 45.02 | 45.02 | |
| 7 | 45.37 | Unna Ró (2002) | DEN-Hvidovre AM | 188 | 45.37 | 45.37 | |
| 8 | 46.05 | Maja Felby (2002) | DEN-Køge Atletik | 238 | 46.05 | 46.05 | |
| HEAT 2 / 2 | |||||||
| 1 | 43.28 | Maria Biskopstø (2002) | DEN-Vejle IF | 452 | 43.28 | ||
| 2 | 43.10 | Carla Nørremark (2002) | DEN-Hvidovre AM | 157 | 43.10 | 43.10 | |
| 3 | 42.79 | Louise Høkilde Wassmann (2003) | DEN-Greve Atletik | 117 | 42.79 | 42.79 | |
| 4 | 41.52 | Sarah Sækmose (2002) | DEN-Vejle IF | 458 | 41.52 | ||
| 5 | 42.35 | Mille B. Olesen (2002) | DEN-Aalborg AM | 507 | 42.35 | ||
| 6 | 42.79 | Cecilie Gedsø Færge (2003) | DEN-Ballerup AK | 49 | 42.79 | ||
| 7 | 42.86 | Majken Lützen (2003) | DEN-Ballerup AK | 63 | 42.86 | ||
| 8 | 42.87 | Sofie Spiegelhauer (2002) | DEN-Sparta | 432 | 42.87 | 42.87 | |
| 1 | 44.77 | DNS | Klara Lind Toustrup (2003) | DEN-Aarhus 1900 | 535 | 44.77 | 44.77 |
| 2 | 45.83 | DNS | Bára J. Glerfoss (2003) | DEN-Hvidovre AM | 155 | 45.83 | 45.83 |
| 3 | DNS | Alberte Gravgaard (2003) | DEN-AK Holstebro | 11 | |||