| Frederick to Clemson (South Carolina) | 442.88 mi (712.75 km) |
| Frederick to Clermont (Florida) | 792.31 mi (1,275.09 km) |
| Frederick to Cleveland (Mississippi) | 835.51 mi (1,344.62 km) |
| Frederick to Cleveland (Ohio) | 264.96 mi (426.41 km) |
| Frederick to Cleveland (Tennessee) | 503.92 mi (810.98 km) |
| Frederick to Cleveland Heights (Ohio) | 261.05 mi (420.12 km) |
| Frederick to Cliffside Park (New Jersey) | 204.83 mi (329.65 km) |
| Frederick to Clifton (Colorado) | 1,652.94 mi (2,660.14 km) |
| Frederick to Clifton (New Jersey) | 198.31 mi (319.14 km) |
| Frederick to Clinton (Iowa) | 692.10 mi (1,113.82 km) |
| Frederick to Clinton (Maryland) | 54.53 mi (87.76 km) |
| Frederick to Clinton (Mississippi) | 871.94 mi (1,403.25 km) |
| Frederick to Clinton (Utah) | 1,818.08 mi (2,925.91 km) |
| Frederick to Clive (Iowa) | 872.19 mi (1,403.65 km) |
| Frederick to Cloquet (Minnesota) | 910.09 mi (1,464.64 km) |
