| Portes-les-Valence to Cosenza | 697.84 mi (1,123.06 km) |
| Portes-les-Valence to Cossato | 167.13 mi (268.97 km) |
| Portes-les-Valence to Costa Volpino | 262.02 mi (421.69 km) |
| Portes-les-Valence to Creazzo | 324.76 mi (522.65 km) |
| Portes-les-Valence to Crema | 236.78 mi (381.07 km) |
| Portes-les-Valence to Cremona | 252.53 mi (406.41 km) |
| Portes-les-Valence to Crevalcore | 307.71 mi (495.22 km) |
| Portes-les-Valence to Crispiano | 692.14 mi (1,113.89 km) |
| Portes-les-Valence to Crosia | 709.28 mi (1,141.47 km) |
| Portes-les-Valence to Crotone | 743.97 mi (1,197.30 km) |
| Portes-les-Valence to Cuneo | 135.75 mi (218.47 km) |
| Portes-les-Valence to Cuorgne | 139.81 mi (225.00 km) |
| Portes-les-Valence to Cusano Milanino | 214.76 mi (345.63 km) |
| Portes-les-Valence to Cutro | 740.28 mi (1,191.36 km) |
| Portes-les-Valence to Cutrofiano | 752.90 mi (1,211.68 km) |
