| Portet-sur-Garonne to Cologno al Serio | 432.24 mi (695.62 km) |
| Portet-sur-Garonne to Cologno Monzese | 411.61 mi (662.42 km) |
| Portet-sur-Garonne to Colorno | 454.78 mi (731.90 km) |
| Portet-sur-Garonne to Comacchio | 540.39 mi (869.67 km) |
| Portet-sur-Garonne to Comiso | 829.41 mi (1,334.80 km) |
| Portet-sur-Garonne to Como | 408.96 mi (658.16 km) |
| Portet-sur-Garonne to Concordia Sagittaria | 582.97 mi (938.21 km) |
| Portet-sur-Garonne to Concorezzo | 415.51 mi (668.70 km) |
| Portet-sur-Garonne to Conegliano | 558.73 mi (899.18 km) |
| Portet-sur-Garonne to Conselice | 522.25 mi (840.48 km) |
| Portet-sur-Garonne to Conselve | 529.53 mi (852.20 km) |
| Portet-sur-Garonne to Conversano | 821.40 mi (1,321.92 km) |
| Portet-sur-Garonne to Copertino | 883.39 mi (1,421.68 km) |
| Portet-sur-Garonne to Copparo | 524.72 mi (844.45 km) |
| Portet-sur-Garonne to Corato | 781.98 mi (1,258.48 km) |
