| Rockville to Arcos de Valdevez | 3,518.76 mi (5,662.89 km) |
| Rockville to Arcozelo | 3,528.19 mi (5,678.08 km) |
| Rockville to Arganil | 3,578.50 mi (5,759.03 km) |
| Rockville to Arouca | 3,550.42 mi (5,713.86 km) |
| Rockville to Arruda dos Vinhos | 3,562.02 mi (5,732.52 km) |
| Rockville to Aveiro | 3,538.59 mi (5,694.80 km) |
| Rockville to Aver-o-Mar | 3,513.07 mi (5,653.74 km) |
| Rockville to Aves | 3,534.75 mi (5,688.63 km) |
| Rockville to Azambuja | 3,569.63 mi (5,744.76 km) |
| Rockville to Baiao | 3,554.62 mi (5,720.60 km) |
| Rockville to Barcelos | 3,517.56 mi (5,660.96 km) |
| Rockville to Barreiro | 3,570.66 mi (5,746.42 km) |
| Rockville to Batalha | 3,557.18 mi (5,724.74 km) |
| Rockville to Beja | 3,647.00 mi (5,869.27 km) |
| Rockville to Belas | 3,557.54 mi (5,725.32 km) |
