| Formia to Cicero (Illinois) | 4,888.92 mi (7,867.95 km) |
| Formia to Cimarron Hills (Colorado) | 5,677.56 mi (9,137.15 km) |
| Formia to Cincinnati (Ohio) | 4,870.39 mi (7,838.14 km) |
| Formia to Cinco Ranch (Texas) | 5,779.50 mi (9,301.21 km) |
| Formia to Circleville (Ohio) | 4,784.17 mi (7,699.38 km) |
| Formia to Citrus (California) | 6,386.54 mi (10,278.14 km) |
| Formia to Citrus Heights (California) | 6,225.50 mi (10,018.97 km) |
| Formia to Citrus Park (Florida) | 5,263.02 mi (8,470.01 km) |
| Formia to Claiborne (Louisiana) | 5,493.63 mi (8,841.14 km) |
| Formia to Claremont (California) | 6,380.36 mi (10,268.20 km) |
| Formia to Claremont (New Hampshire) | 4,184.10 mi (6,733.65 km) |
| Formia to Claremore (Oklahoma) | 5,456.94 mi (8,782.10 km) |
| Formia to Clarksburg (Maryland) | 4,554.19 mi (7,329.25 km) |
| Formia to Clarksburg (West Virginia) | 4,685.30 mi (7,540.26 km) |
| Formia to Clarksdale (Mississippi) | 5,347.18 mi (8,605.46 km) |
