| Delaware to Arcos de Valdevez | 3,760.52 mi (6,051.97 km) |
| Delaware to Arcozelo | 3,773.70 mi (6,073.19 km) |
| Delaware to Arganil | 3,826.70 mi (6,158.48 km) |
| Delaware to Arouca | 3,795.89 mi (6,108.90 km) |
| Delaware to Arruda dos Vinhos | 3,816.72 mi (6,142.42 km) |
| Delaware to Aveiro | 3,785.91 mi (6,092.83 km) |
| Delaware to Aver-o-Mar | 3,757.26 mi (6,046.72 km) |
| Delaware to Aves | 3,778.12 mi (6,080.30 km) |
| Delaware to Azambuja | 3,823.70 mi (6,153.65 km) |
| Delaware to Baiao | 3,798.79 mi (6,113.55 km) |
| Delaware to Barcelos | 3,761.04 mi (6,052.81 km) |
| Delaware to Barreiro | 3,826.61 mi (6,158.34 km) |
| Delaware to Batalha | 3,808.80 mi (6,129.68 km) |
| Delaware to Beja | 3,903.68 mi (6,282.37 km) |
| Delaware to Belas | 3,813.37 mi (6,137.02 km) |
