| Formia to Cay | 939.10 mi (1,511.33 km) |
| Formia to Caybasi | 1,218.12 mi (1,960.38 km) |
| Formia to Caycuma | 955.72 mi (1,538.09 km) |
| Formia to Cayeli | 1,403.96 mi (2,259.45 km) |
| Formia to Cayiralan | 1,165.71 mi (1,876.03 km) |
| Formia to Cayirhan | 948.31 mi (1,526.15 km) |
| Formia to Cayirli | 1,385.63 mi (2,229.95 km) |
| Formia to Cayirova | 820.55 mi (1,320.55 km) |
| Formia to Caykara | 1,383.24 mi (2,226.11 km) |
| Formia to Cekerek | 1,146.45 mi (1,845.04 km) |
| Formia to Cekme | 808.68 mi (1,301.45 km) |
| Formia to Celtik | 970.44 mi (1,561.77 km) |
| Formia to Cerkes | 1,002.87 mi (1,613.96 km) |
| Formia to Cerkezkoy | 746.03 mi (1,200.62 km) |
| Formia to Cermik | 1,384.98 mi (2,228.92 km) |
