| Idrija to Benavente | 1,255.00 mi (2,019.72 km) |
| Idrija to Bombarral | 1,261.23 mi (2,029.76 km) |
| Idrija to Bougado | 1,169.44 mi (1,882.03 km) |
| Idrija to Braga | 1,157.00 mi (1,862.01 km) |
| Idrija to Braganca | 1,071.13 mi (1,723.82 km) |
| Idrija to Cabeceiras de Basto | 1,138.28 mi (1,831.88 km) |
| Idrija to Cacem | 1,285.44 mi (2,068.72 km) |
| Idrija to Cadaval | 1,259.83 mi (2,027.49 km) |
| Idrija to Caldas da Rainha | 1,255.66 mi (2,020.79 km) |
| Idrija to Calheta | 1,884.78 mi (3,033.26 km) |
| Idrija to Camara de Lobos | 1,877.53 mi (3,021.59 km) |
| Idrija to Canico | 1,874.04 mi (3,015.98 km) |
| Idrija to Cantanhede | 1,200.09 mi (1,931.36 km) |
| Idrija to Carregal do Sal | 1,169.43 mi (1,882.01 km) |
| Idrija to Cartaxo | 1,247.90 mi (2,008.30 km) |
