| Frederick to Carrollwood (Florida) | 838.45 mi (1,349.36 km) |
| Frederick to Carson (California) | 2,277.46 mi (3,665.22 km) |
| Frederick to Carson City (Nevada) | 2,242.50 mi (3,608.95 km) |
| Frederick to Carteret (New Jersey) | 186.40 mi (299.98 km) |
| Frederick to Cartersville (Georgia) | 546.97 mi (880.26 km) |
| Frederick to Carthage (Missouri) | 928.96 mi (1,495.01 km) |
| Frederick to Cary (Illinois) | 597.67 mi (961.86 km) |
| Frederick to Cary (North Carolina) | 263.77 mi (424.50 km) |
| Frederick to Casa de Oro-Mount Helix (California) | 2,237.27 mi (3,600.53 km) |
| Frederick to Casa Grande (Arizona) | 1,955.60 mi (3,147.24 km) |
| Frederick to Casas Adobes (Arizona) | 1,931.28 mi (3,108.10 km) |
| Frederick to Cascades (Virginia) | 26.80 mi (43.13 km) |
| Frederick to Casper (Wyoming) | 1,514.88 mi (2,437.97 km) |
| Frederick to Casselberry (Florida) | 776.89 mi (1,250.28 km) |
| Frederick to Castaic (California) | 2,281.23 mi (3,671.29 km) |
