| Portes-les-Valence to Catania | 734.84 mi (1,182.61 km) |
| Portes-les-Valence to Catanzaro | 729.58 mi (1,174.15 km) |
| Portes-les-Valence to Cattolica | 392.59 mi (631.81 km) |
| Portes-les-Valence to Cava de' Tirreni | 574.98 mi (925.34 km) |
| Portes-les-Valence to Cavallino | 746.04 mi (1,200.63 km) |
| Portes-les-Valence to Cavarzere | 352.35 mi (567.05 km) |
| Portes-les-Valence to Cave | 456.31 mi (734.37 km) |
| Portes-les-Valence to Cavriago | 277.60 mi (446.76 km) |
| Portes-les-Valence to Cavriglia | 340.34 mi (547.72 km) |
| Portes-les-Valence to Cazzago San Martino | 255.27 mi (410.81 km) |
| Portes-les-Valence to Ceccano | 482.88 mi (777.11 km) |
| Portes-les-Valence to Cecina | 299.75 mi (482.41 km) |
| Portes-les-Valence to Cefalu | 668.05 mi (1,075.13 km) |
| Portes-les-Valence to Ceglie Messapico | 702.70 mi (1,130.88 km) |
| Portes-les-Valence to Celano | 475.60 mi (765.40 km) |
