| Formia to Cloverly (Maryland) | 4,547.06 mi (7,317.79 km) |
| Formia to Clovis (California) | 6,286.76 mi (10,117.57 km) |
| Formia to Clovis (New Mexico) | 5,848.12 mi (9,411.65 km) |
| Formia to Clute (Texas) | 5,798.42 mi (9,331.65 km) |
| Formia to Coachella (California) | 6,353.52 mi (10,225.00 km) |
| Formia to Coalinga (California) | 6,345.90 mi (10,212.74 km) |
| Formia to Coamo (Puerto Rico) | 4,891.36 mi (7,871.88 km) |
| Formia to Coatesville (Pennsylvania) | 4,461.00 mi (7,179.29 km) |
| Formia to Cockeysville (Maryland) | 4,516.14 mi (7,268.03 km) |
| Formia to Cocoa (Florida) | 5,164.97 mi (8,312.22 km) |
| Formia to Cocoa Beach (Florida) | 5,160.50 mi (8,305.02 km) |
| Formia to Coconut Creek (Florida) | 5,228.91 mi (8,415.12 km) |
| Formia to Coeur d'Alene (Idaho) | 5,582.43 mi (8,984.05 km) |
| Formia to Cohoes (New York) | 4,264.96 mi (6,863.79 km) |
| Formia to Cold Springs (Nevada) | 6,129.61 mi (9,864.66 km) |
