| Formia to Caño Martin Peña (Puerto Rico) | 4,860.06 mi (7,821.50 km) |
| Formia to Cañon City (Colorado) | 5,717.75 mi (9,201.83 km) |
| Formia to Canóvanas (Puerto Rico) | 4,854.98 mi (7,813.33 km) |
| Formia to Canton (Georgia) | 5,080.24 mi (8,175.85 km) |
| Formia to Canton (Illinois) | 5,036.75 mi (8,105.86 km) |
| Formia to Canton (Mississippi) | 5,397.39 mi (8,686.25 km) |
| Formia to Canton (Ohio) | 4,668.39 mi (7,513.05 km) |
| Formia to Canyon (Texas) | 5,770.98 mi (9,287.49 km) |
| Formia to Canyon Lake (California) | 6,390.53 mi (10,284.56 km) |
| Formia to Canyon Lake (Texas) | 5,878.78 mi (9,460.98 km) |
| Formia to Cape Coral (Florida) | 5,299.34 mi (8,528.46 km) |
| Formia to Cape Girardeau (Missouri) | 5,162.75 mi (8,308.64 km) |
| Formia to Carbondale (Illinois) | 5,130.29 mi (8,256.40 km) |
| Formia to Carlisle (Pennsylvania) | 4,513.37 mi (7,263.57 km) |
| Formia to Carlsbad (California) | 6,423.27 mi (10,337.25 km) |
