| Castle Rock to Benavente | 4,863.63 mi (7,827.25 km) |
| Castle Rock to Bombarral | 4,836.06 mi (7,782.89 km) |
| Castle Rock to Bougado | 4,780.07 mi (7,692.79 km) |
| Castle Rock to Braga | 4,777.60 mi (7,688.80 km) |
| Castle Rock to Braganca | 4,837.55 mi (7,785.28 km) |
| Castle Rock to Cabeceiras de Basto | 4,795.39 mi (7,717.44 km) |
| Castle Rock to Cacem | 4,849.12 mi (7,803.91 km) |
| Castle Rock to Cadaval | 4,839.87 mi (7,789.01 km) |
| Castle Rock to Caldas da Rainha | 4,831.40 mi (7,775.38 km) |
| Castle Rock to Calheta | 4,721.35 mi (7,598.28 km) |
| Castle Rock to Camara de Lobos | 4,731.59 mi (7,614.76 km) |
| Castle Rock to Canico | 4,739.84 mi (7,628.03 km) |
| Castle Rock to Cantanhede | 4,817.70 mi (7,753.33 km) |
| Castle Rock to Carregal do Sal | 4,839.80 mi (7,788.91 km) |
| Castle Rock to Cartaxo | 4,857.04 mi (7,816.66 km) |
