| Frederick to Carlsbad (California) | 2,244.30 mi (3,611.85 km) |
| Frederick to Carlsbad (New Mexico) | 1,570.83 mi (2,528.00 km) |
| Frederick to Carmel (Indiana) | 465.46 mi (749.08 km) |
| Frederick to Carmichael (California) | 2,333.76 mi (3,755.83 km) |
| Frederick to Carney (Maryland) | 47.58 mi (76.57 km) |
| Frederick to Carnot-Moon (Pennsylvania) | 166.29 mi (267.62 km) |
| Frederick to Carol Stream (Illinois) | 586.74 mi (944.27 km) |
| Frederick to Carolina (Puerto Rico) | 1,605.76 mi (2,584.23 km) |
| Frederick to Carolina Forest (South Carolina) | 400.37 mi (644.34 km) |
| Frederick to Carpentersville (Illinois) | 598.07 mi (962.50 km) |
| Frederick to Carpinteria (California) | 2,330.17 mi (3,750.05 km) |
| Frederick to Carrboro (North Carolina) | 259.06 mi (416.91 km) |
| Frederick to Carroll (Iowa) | 929.63 mi (1,496.09 km) |
| Frederick to Carrollton (Georgia) | 586.85 mi (944.44 km) |
| Frederick to Carrollton (Texas) | 1,170.92 mi (1,884.41 km) |
