| Harmanli to Cloverly (Maryland) | 5,042.67 mi (8,115.40 km) |
| Harmanli to Clovis (California) | 6,577.80 mi (10,585.94 km) |
| Harmanli to Clovis (New Mexico) | 6,253.93 mi (10,064.72 km) |
| Harmanli to Clute (Texas) | 6,272.53 mi (10,094.67 km) |
| Harmanli to Coachella (California) | 6,684.06 mi (10,756.95 km) |
| Harmanli to Coalinga (California) | 6,635.75 mi (10,679.20 km) |
| Harmanli to Coamo (Puerto Rico) | 5,504.26 mi (8,858.24 km) |
| Harmanli to Coatesville (Pennsylvania) | 4,955.49 mi (7,975.09 km) |
| Harmanli to Cockeysville (Maryland) | 5,010.84 mi (8,064.16 km) |
| Harmanli to Cocoa (Florida) | 5,702.55 mi (9,177.37 km) |
| Harmanli to Cocoa Beach (Florida) | 5,698.80 mi (9,171.33 km) |
| Harmanli to Coconut Creek (Florida) | 5,777.74 mi (9,298.37 km) |
| Harmanli to Coeur d'Alene (Idaho) | 5,837.39 mi (9,394.37 km) |
| Harmanli to Cohoes (New York) | 4,749.15 mi (7,643.02 km) |
| Harmanli to Cold Springs (Nevada) | 6,404.86 mi (10,307.63 km) |
