| Olbia to Carpentras | 313.72 mi (504.88 km) |
| Olbia to Carquefou | 700.11 mi (1,126.71 km) |
| Olbia to Carqueiranne | 231.48 mi (372.53 km) |
| Olbia to Carrieres-sous-Poissy | 663.43 mi (1,067.70 km) |
| Olbia to Carrieres-sur-Seine | 654.74 mi (1,053.70 km) |
| Olbia to Carros | 229.78 mi (369.80 km) |
| Olbia to Carvin | 732.41 mi (1,178.70 km) |
| Olbia to Castanet-Tolosan | 446.86 mi (719.16 km) |
| Olbia to Castelginest | 454.42 mi (731.33 km) |
| Olbia to Castelnau-le-Lez | 342.26 mi (550.82 km) |
| Olbia to Castelnaudary | 420.63 mi (676.94 km) |
| Olbia to Castelsarrasin | 478.74 mi (770.45 km) |
| Olbia to Castres | 414.31 mi (666.77 km) |
| Olbia to Caudebec-les-Elbeuf | 709.65 mi (1,142.07 km) |
| Olbia to Caudry | 700.61 mi (1,127.52 km) |
