| Castleton to Benavente | 1,057.68 mi (1,702.17 km) |
| Castleton to Bombarral | 1,042.73 mi (1,678.11 km) |
| Castleton to Bougado | 896.76 mi (1,443.19 km) |
| Castleton to Braga | 880.56 mi (1,417.12 km) |
| Castleton to Braganca | 841.20 mi (1,353.78 km) |
| Castleton to Cabeceiras de Basto | 875.76 mi (1,409.39 km) |
| Castleton to Cacem | 1,078.04 mi (1,734.94 km) |
| Castleton to Cadaval | 1,044.22 mi (1,680.51 km) |
| Castleton to Caldas da Rainha | 1,033.20 mi (1,662.78 km) |
| Castleton to Calheta | 1,620.05 mi (2,607.22 km) |
| Castleton to Camara de Lobos | 1,617.81 mi (2,603.62 km) |
| Castleton to Canico | 1,618.45 mi (2,604.64 km) |
| Castleton to Cantanhede | 962.91 mi (1,549.65 km) |
| Castleton to Carregal do Sal | 948.82 mi (1,526.99 km) |
| Castleton to Cartaxo | 1,045.22 mi (1,682.12 km) |
