| Castel Gandolfo to Bombarral | 1,155.14 mi (1,859.02 km) |
| Castel Gandolfo to Bougado | 1,094.49 mi (1,761.41 km) |
| Castel Gandolfo to Braga | 1,085.28 mi (1,746.58 km) |
| Castel Gandolfo to Braganca | 998.03 mi (1,606.18 km) |
| Castel Gandolfo to Cabeceiras de Basto | 1,064.77 mi (1,713.58 km) |
| Castel Gandolfo to Cacem | 1,172.68 mi (1,887.24 km) |
| Castel Gandolfo to Cadaval | 1,152.94 mi (1,855.47 km) |
| Castel Gandolfo to Caldas da Rainha | 1,151.60 mi (1,853.32 km) |
| Castel Gandolfo to Calheta | 1,743.86 mi (2,806.47 km) |
| Castel Gandolfo to Camara de Lobos | 1,735.41 mi (2,792.88 km) |
| Castel Gandolfo to Canico | 1,730.82 mi (2,785.48 km) |
| Castel Gandolfo to Cantanhede | 1,108.49 mi (1,783.94 km) |
| Castel Gandolfo to Carregal do Sal | 1,076.65 mi (1,732.70 km) |
| Castel Gandolfo to Cartaxo | 1,138.19 mi (1,831.73 km) |
| Castel Gandolfo to Cascais | 1,179.71 mi (1,898.55 km) |
