| Frederick to Cadillac (Michigan) | 529.07 mi (851.45 km) |
| Frederick to Caguas (Puerto Rico) | 1,615.31 mi (2,599.59 km) |
| Frederick to Cahokia (Illinois) | 687.48 mi (1,106.40 km) |
| Frederick to Calabasas (California) | 2,291.81 mi (3,688.32 km) |
| Frederick to Caldwell (Idaho) | 2,031.16 mi (3,268.83 km) |
| Frederick to Caledonia (Wisconsin) | 591.60 mi (952.09 km) |
| Frederick to Calera (Alabama) | 677.61 mi (1,090.51 km) |
| Frederick to Calexico (California) | 2,160.75 mi (3,477.39 km) |
| Frederick to Calhoun (Georgia) | 537.41 mi (864.88 km) |
| Frederick to California (Maryland) | 92.81 mi (149.37 km) |
| Frederick to California City (California) | 2,224.58 mi (3,580.11 km) |
| Frederick to Callaway (Florida) | 790.59 mi (1,272.33 km) |
| Frederick to Calumet City (Illinois) | 552.88 mi (889.77 km) |
| Frederick to Calverton (Maryland) | 35.98 mi (57.90 km) |
| Frederick to Camano (Washington) | 2,290.95 mi (3,686.93 km) |
