| Formia to Carmignano | 220.34 mi (354.60 km) |
| Formia to Carovigno | 214.82 mi (345.72 km) |
| Formia to Carpenedolo | 325.24 mi (523.42 km) |
| Formia to Carpi | 279.42 mi (449.68 km) |
| Formia to Carrara | 263.91 mi (424.73 km) |
| Formia to Carugate | 365.68 mi (588.50 km) |
| Formia to Casal di Principe | 31.95 mi (51.42 km) |
| Formia to Casale Monferrato | 372.55 mi (599.56 km) |
| Formia to Casale sul Sile | 306.24 mi (492.84 km) |
| Formia to Casalecchio di Reno | 251.67 mi (405.03 km) |
| Formia to Casalgrande | 271.61 mi (437.11 km) |
| Formia to Casalmaggiore | 303.43 mi (488.32 km) |
| Formia to Casalnuovo di Napoli | 45.20 mi (72.74 km) |
| Formia to Casalpusterlengo | 335.93 mi (540.62 km) |
| Formia to Casaluce | 35.51 mi (57.15 km) |
