| Owings Mills to Arcos de Valdevez | 3,491.23 mi (5,618.59 km) |
| Owings Mills to Arcozelo | 3,500.88 mi (5,634.12 km) |
| Owings Mills to Arganil | 3,551.35 mi (5,715.34 km) |
| Owings Mills to Arouca | 3,523.11 mi (5,669.90 km) |
| Owings Mills to Arruda dos Vinhos | 3,535.29 mi (5,689.50 km) |
| Owings Mills to Aveiro | 3,511.38 mi (5,651.02 km) |
| Owings Mills to Aver-o-Mar | 3,485.68 mi (5,609.65 km) |
| Owings Mills to Aves | 3,507.31 mi (5,644.48 km) |
| Owings Mills to Azambuja | 3,542.85 mi (5,701.67 km) |
| Owings Mills to Baiao | 3,527.23 mi (5,676.53 km) |
| Owings Mills to Barcelos | 3,490.12 mi (5,616.81 km) |
| Owings Mills to Barreiro | 3,544.02 mi (5,703.54 km) |
| Owings Mills to Batalha | 3,530.25 mi (5,681.39 km) |
| Owings Mills to Beja | 3,620.41 mi (5,826.49 km) |
| Owings Mills to Belas | 3,530.89 mi (5,682.42 km) |
