| Duchcov to Caguas (Puerto Rico) | 4,808.45 mi (7,738.46 km) |
| Duchcov to Cahokia (Illinois) | 4,750.67 mi (7,645.46 km) |
| Duchcov to Calabasas (California) | 5,903.98 mi (9,501.53 km) |
| Duchcov to Caldwell (Idaho) | 5,276.59 mi (8,491.85 km) |
| Duchcov to Caledonia (Wisconsin) | 4,453.40 mi (7,167.05 km) |
| Duchcov to Calera (Alabama) | 4,905.83 mi (7,895.18 km) |
| Duchcov to Calexico (California) | 5,903.73 mi (9,501.14 km) |
| Duchcov to Calhoun (Georgia) | 4,766.39 mi (7,670.77 km) |
| Duchcov to California (Maryland) | 4,250.76 mi (6,840.94 km) |
| Duchcov to California City (California) | 5,820.44 mi (9,367.10 km) |
| Duchcov to Callaway (Florida) | 5,015.39 mi (8,071.50 km) |
| Duchcov to Calumet City (Illinois) | 4,501.41 mi (7,244.32 km) |
| Duchcov to Calverton (Maryland) | 4,232.14 mi (6,810.97 km) |
| Duchcov to Camano (Washington) | 5,134.18 mi (8,262.66 km) |
| Duchcov to Camarillo (California) | 5,908.49 mi (9,508.79 km) |
