| Portes-les-Valence to Casandrino | 546.46 mi (879.44 km) |
| Portes-les-Valence to Casapulla | 542.97 mi (873.82 km) |
| Portes-les-Valence to Casarano | 754.89 mi (1,214.88 km) |
| Portes-les-Valence to Casatenovo | 222.98 mi (358.86 km) |
| Portes-les-Valence to Casciana Terme | 299.18 mi (481.48 km) |
| Portes-les-Valence to Cascina | 292.38 mi (470.55 km) |
| Portes-les-Valence to Caselle Torinese | 136.89 mi (220.30 km) |
| Portes-les-Valence to Caserta | 545.17 mi (877.37 km) |
| Portes-les-Valence to Casier | 364.86 mi (587.18 km) |
| Portes-les-Valence to Casorate Primo | 204.23 mi (328.68 km) |
| Portes-les-Valence to Casoria | 549.90 mi (884.98 km) |
| Portes-les-Valence to Cassano al Ionio | 681.09 mi (1,096.10 km) |
| Portes-les-Valence to Cassano d'Adda | 230.42 mi (370.83 km) |
| Portes-les-Valence to Cassano delle Murge | 661.29 mi (1,064.25 km) |
| Portes-les-Valence to Cassina de' Pecchi | 223.07 mi (359.00 km) |
