| Rockville to Benavente | 3,575.64 mi (5,754.44 km) |
| Rockville to Bombarral | 3,549.95 mi (5,713.10 km) |
| Rockville to Bougado | 3,524.89 mi (5,672.77 km) |
| Rockville to Braga | 3,526.17 mi (5,674.83 km) |
| Rockville to Braganca | 3,599.20 mi (5,792.35 km) |
| Rockville to Cabeceiras de Basto | 3,546.00 mi (5,706.73 km) |
| Rockville to Cacem | 3,555.87 mi (5,722.63 km) |
| Rockville to Cadaval | 3,553.62 mi (5,718.99 km) |
| Rockville to Caldas da Rainha | 3,547.18 mi (5,708.64 km) |
| Rockville to Calheta | 3,325.45 mi (5,351.79 km) |
| Rockville to Camara de Lobos | 3,336.20 mi (5,369.10 km) |
| Rockville to Canico | 3,344.51 mi (5,382.47 km) |
| Rockville to Cantanhede | 3,548.80 mi (5,711.25 km) |
| Rockville to Carregal do Sal | 3,575.41 mi (5,754.07 km) |
| Rockville to Cartaxo | 3,571.48 mi (5,747.73 km) |
