| Olbia to Coudekerque-Branche | 776.52 mi (1,249.69 km) |
| Olbia to Coueron | 705.81 mi (1,135.90 km) |
| Olbia to Coulommiers | 629.22 mi (1,012.62 km) |
| Olbia to Courbevoic | 654.95 mi (1,054.03 km) |
| Olbia to Courcouronnes | 634.88 mi (1,021.73 km) |
| Olbia to Cournon-d'Auvergne | 459.61 mi (739.68 km) |
| Olbia to Courrieres | 730.50 mi (1,175.62 km) |
| Olbia to Coutras | 563.45 mi (906.78 km) |
| Olbia to Couzeix | 537.50 mi (865.02 km) |
| Olbia to Cran-Gevrier | 384.33 mi (618.52 km) |
| Olbia to Craponne | 410.85 mi (661.20 km) |
| Olbia to Creil | 669.65 mi (1,077.70 km) |
| Olbia to Crepy-en-Valois | 658.47 mi (1,059.70 km) |
| Olbia to Crest | 347.52 mi (559.28 km) |
| Olbia to Creteil | 643.43 mi (1,035.50 km) |
