| Formia to Castrovillari | 168.61 mi (271.36 km) |
| Formia to Catania | 271.88 mi (437.55 km) |
| Formia to Catanzaro | 227.15 mi (365.57 km) |
| Formia to Cattolica | 191.88 mi (308.80 km) |
| Formia to Cava de' Tirreni | 68.74 mi (110.63 km) |
| Formia to Cavallino | 248.54 mi (399.99 km) |
| Formia to Cavarzere | 278.35 mi (447.96 km) |
| Formia to Cave | 51.90 mi (83.52 km) |
| Formia to Cavriago | 283.78 mi (456.71 km) |
| Formia to Cavriglia | 189.77 mi (305.41 km) |
| Formia to Cazzago San Martino | 348.27 mi (560.49 km) |
| Formia to Ceccano | 25.40 mi (40.88 km) |
| Formia to Cecina | 212.49 mi (341.98 km) |
| Formia to Cefalu | 224.42 mi (361.16 km) |
| Formia to Ceglie Messapico | 207.04 mi (333.19 km) |
