| Olbia to Cognac | 593.69 mi (955.45 km) |
| Olbia to Cogolin | 221.87 mi (357.07 km) |
| Olbia to Colmar | 506.15 mi (814.57 km) |
| Olbia to Colombes | 656.42 mi (1,056.41 km) |
| Olbia to Colomiers | 456.85 mi (735.23 km) |
| Olbia to Combs-la-Ville | 634.03 mi (1,020.38 km) |
| Olbia to Comines | 747.83 mi (1,203.51 km) |
| Olbia to Compiegne | 670.61 mi (1,079.24 km) |
| Olbia to Concarneau | 816.67 mi (1,314.31 km) |
| Olbia to Conde-sur-l'Escaut | 717.18 mi (1,154.19 km) |
| Olbia to Conflans-Sainte-Honorine | 664.73 mi (1,069.78 km) |
| Olbia to Corbas | 401.40 mi (645.99 km) |
| Olbia to Corbeil-Essonnes | 632.92 mi (1,018.58 km) |
| Olbia to Cormeilles-en-Parisis | 660.59 mi (1,063.12 km) |
| Olbia to Cosne sur Loire | 554.08 mi (891.71 km) |
