| Harmanli to Carson (California) | 6,729.62 mi (10,830.27 km) |
| Harmanli to Carson City (Nevada) | 6,433.69 mi (10,354.03 km) |
| Harmanli to Carteret (New Jersey) | 4,864.37 mi (7,828.45 km) |
| Harmanli to Cartersville (Georgia) | 5,591.53 mi (8,998.70 km) |
| Harmanli to Carthage (Missouri) | 5,801.54 mi (9,336.68 km) |
| Harmanli to Cary (Illinois) | 5,325.76 mi (8,570.98 km) |
| Harmanli to Cary (North Carolina) | 5,269.56 mi (8,480.54 km) |
| Harmanli to Casa de Oro-Mount Helix (California) | 6,762.81 mi (10,883.69 km) |
| Harmanli to Casa Grande (Arizona) | 6,609.44 mi (10,636.87 km) |
| Harmanli to Casas Adobes (Arizona) | 6,620.89 mi (10,655.30 km) |
| Harmanli to Cascades (Virginia) | 5,061.14 mi (8,145.11 km) |
| Harmanli to Casper (Wyoming) | 5,870.14 mi (9,447.08 km) |
| Harmanli to Casselberry (Florida) | 5,713.20 mi (9,194.51 km) |
| Harmanli to Castaic (California) | 6,698.96 mi (10,780.93 km) |
| Harmanli to Castle Pines (Colorado) | 6,021.69 mi (9,690.97 km) |
