| Formia to Chitila | 664.03 mi (1,068.65 km) |
| Formia to Cisnadie | 610.17 mi (981.98 km) |
| Formia to Cluj-Napoca | 623.41 mi (1,003.27 km) |
| Formia to Codlea | 666.36 mi (1,072.40 km) |
| Formia to Comanesti | 730.96 mi (1,176.37 km) |
| Formia to Comarnic | 663.59 mi (1,067.94 km) |
| Formia to Constanta | 786.94 mi (1,266.46 km) |
| Formia to Corabia | 580.31 mi (933.92 km) |
| Formia to Costesti | 615.41 mi (990.40 km) |
| Formia to Covasna | 703.38 mi (1,131.98 km) |
| Formia to Craiova | 558.33 mi (898.54 km) |
| Formia to Cristuru Secuiesc | 666.13 mi (1,072.03 km) |
| Formia to Cugir | 580.91 mi (934.88 km) |
| Formia to Cumpana | 782.54 mi (1,259.38 km) |
| Formia to Curtea de Arges | 617.36 mi (993.54 km) |
