| Sofia to Cloverly (Maryland) | 4,905.90 mi (7,895.28 km) |
| Sofia to Clovis (California) | 6,469.49 mi (10,411.64 km) |
| Sofia to Clovis (New Mexico) | 6,128.19 mi (9,862.37 km) |
| Sofia to Clute (Texas) | 6,138.52 mi (9,879.00 km) |
| Sofia to Coachella (California) | 6,569.64 mi (10,572.81 km) |
| Sofia to Coalinga (California) | 6,527.71 mi (10,505.34 km) |
| Sofia to Coamo (Puerto Rico) | 5,363.98 mi (8,632.50 km) |
| Sofia to Coatesville (Pennsylvania) | 4,818.78 mi (7,755.07 km) |
| Sofia to Cockeysville (Maryland) | 4,874.13 mi (7,844.16 km) |
| Sofia to Cocoa (Florida) | 5,562.71 mi (8,952.32 km) |
| Sofia to Cocoa Beach (Florida) | 5,558.91 mi (8,946.19 km) |
| Sofia to Coconut Creek (Florida) | 5,637.24 mi (9,072.27 km) |
| Sofia to Coeur d'Alene (Idaho) | 5,733.93 mi (9,227.87 km) |
| Sofia to Cohoes (New York) | 4,613.28 mi (7,424.36 km) |
| Sofia to Cold Springs (Nevada) | 6,298.89 mi (10,137.08 km) |
