| Sozopol to Cicero (Illinois) | 5,366.40 mi (8,636.38 km) |
| Sozopol to Cimarron Hills (Colorado) | 6,077.56 mi (9,780.88 km) |
| Sozopol to Cincinnati (Ohio) | 5,383.35 mi (8,663.66 km) |
| Sozopol to Cinco Ranch (Texas) | 6,292.98 mi (10,127.57 km) |
| Sozopol to Circleville (Ohio) | 5,301.38 mi (8,531.74 km) |
| Sozopol to Citrus (California) | 6,718.26 mi (10,812.00 km) |
| Sozopol to Citrus Heights (California) | 6,504.27 mi (10,467.61 km) |
| Sozopol to Citrus Park (Florida) | 5,854.36 mi (9,421.68 km) |
| Sozopol to Claiborne (Louisiana) | 6,010.21 mi (9,672.50 km) |
| Sozopol to Claremont (California) | 6,713.45 mi (10,804.26 km) |
| Sozopol to Claremont (New Hampshire) | 4,719.03 mi (7,594.55 km) |
| Sozopol to Claremore (Oklahoma) | 5,930.02 mi (9,543.45 km) |
| Sozopol to Clarksburg (Maryland) | 5,099.68 mi (8,207.14 km) |
| Sozopol to Clarksburg (West Virginia) | 5,216.85 mi (8,395.70 km) |
| Sozopol to Clarksdale (Mississippi) | 5,862.19 mi (9,434.29 km) |
