| Formia to Coudekerque-Branche | 860.17 mi (1,384.31 km) |
| Formia to Coueron | 861.28 mi (1,386.09 km) |
| Formia to Coulommiers | 731.15 mi (1,176.67 km) |
| Formia to Courbevoic | 763.55 mi (1,228.82 km) |
| Formia to Courcouronnes | 745.38 mi (1,199.58 km) |
| Formia to Cournon-d'Auvergne | 606.15 mi (975.50 km) |
| Formia to Courrieres | 814.92 mi (1,311.48 km) |
| Formia to Coutras | 739.14 mi (1,189.53 km) |
| Formia to Couzeix | 695.63 mi (1,119.51 km) |
| Formia to Cran-Gevrier | 493.59 mi (794.36 km) |
| Formia to Craponne | 542.05 mi (872.35 km) |
| Formia to Creil | 771.78 mi (1,242.06 km) |
| Formia to Crepy-en-Valois | 757.14 mi (1,218.49 km) |
| Formia to Crest | 495.44 mi (797.33 km) |
| Formia to Creteil | 751.51 mi (1,209.43 km) |
