| Harmanli to Clarkston (Georgia) | 5,586.11 mi (8,989.97 km) |
| Harmanli to Clarksville (Indiana) | 5,425.76 mi (8,731.91 km) |
| Harmanli to Clarksville (Tennessee) | 5,572.71 mi (8,968.40 km) |
| Harmanli to Clawson (Michigan) | 5,124.29 mi (8,246.75 km) |
| Harmanli to Clay (Alabama) | 5,687.18 mi (9,152.63 km) |
| Harmanli to Clayton (California) | 6,558.26 mi (10,554.50 km) |
| Harmanli to Clayton (Missouri) | 5,580.19 mi (8,980.45 km) |
| Harmanli to Clayton (North Carolina) | 5,259.88 mi (8,464.96 km) |
| Harmanli to Clayton (Ohio) | 5,295.79 mi (8,522.75 km) |
| Harmanli to Clearfield (Utah) | 6,126.37 mi (9,859.45 km) |
| Harmanli to Clearlake (California) | 6,508.53 mi (10,474.46 km) |
| Harmanli to Clearwater (Florida) | 5,808.76 mi (9,348.30 km) |
| Harmanli to Cleburne (Texas) | 6,168.93 mi (9,927.93 km) |
| Harmanli to Clemmons (North Carolina) | 5,322.47 mi (8,565.69 km) |
| Harmanli to Clemson (South Carolina) | 5,485.74 mi (8,828.44 km) |
