| Portes-les-Valence to Civita Castellana | 416.75 mi (670.70 km) |
| Portes-les-Valence to Civitanova Marche | 452.54 mi (728.30 km) |
| Portes-les-Valence to Civitavecchia | 396.26 mi (637.72 km) |
| Portes-les-Valence to Civitella in Val di Chiana | 353.63 mi (569.12 km) |
| Portes-les-Valence to Clusone | 255.88 mi (411.80 km) |
| Portes-les-Valence to Coccaglio | 252.80 mi (406.84 km) |
| Portes-les-Valence to Codigoro | 354.53 mi (570.56 km) |
| Portes-les-Valence to Codogno | 236.63 mi (380.83 km) |
| Portes-les-Valence to Codroipo | 399.93 mi (643.62 km) |
| Portes-les-Valence to Cogoleto | 188.33 mi (303.08 km) |
| Portes-les-Valence to Colle di Val d'Elsa | 326.43 mi (525.34 km) |
| Portes-les-Valence to Colle Salvetti | 291.09 mi (468.47 km) |
| Portes-les-Valence to Collecchio | 261.86 mi (421.42 km) |
| Portes-les-Valence to Colleferro | 462.94 mi (745.03 km) |
| Portes-les-Valence to Collegno | 132.52 mi (213.27 km) |
