| Harmanli to Cicero (Illinois) | 5,326.44 mi (8,572.07 km) |
| Harmanli to Cimarron Hills (Colorado) | 6,050.88 mi (9,737.96 km) |
| Harmanli to Cincinnati (Ohio) | 5,337.62 mi (8,590.08 km) |
| Harmanli to Cinco Ranch (Texas) | 6,248.28 mi (10,055.64 km) |
| Harmanli to Circleville (Ohio) | 5,254.84 mi (8,456.86 km) |
| Harmanli to Citrus (California) | 6,703.07 mi (10,787.55 km) |
| Harmanli to Citrus Heights (California) | 6,496.55 mi (10,455.19 km) |
| Harmanli to Citrus Park (Florida) | 5,795.56 mi (9,327.05 km) |
| Harmanli to Claiborne (Louisiana) | 5,964.65 mi (9,599.18 km) |
| Harmanli to Claremont (California) | 6,698.05 mi (10,779.47 km) |
| Harmanli to Claremont (New Hampshire) | 4,668.80 mi (7,513.71 km) |
| Harmanli to Claremore (Oklahoma) | 5,891.55 mi (9,481.53 km) |
| Harmanli to Clarksburg (Maryland) | 5,048.16 mi (8,124.23 km) |
| Harmanli to Clarksburg (West Virginia) | 5,167.82 mi (8,316.80 km) |
| Harmanli to Clarksdale (Mississippi) | 5,816.72 mi (9,361.11 km) |
