| Frederick to Clarksdale (Mississippi) | 811.66 mi (1,306.25 km) |
| Frederick to Clarkston (Georgia) | 542.04 mi (872.33 km) |
| Frederick to Clarksville (Indiana) | 455.65 mi (733.29 km) |
| Frederick to Clarksville (Tennessee) | 575.19 mi (925.69 km) |
| Frederick to Clawson (Michigan) | 367.93 mi (592.13 km) |
| Frederick to Clay (Alabama) | 645.61 mi (1,039.01 km) |
| Frederick to Clayton (California) | 2,378.48 mi (3,827.79 km) |
| Frederick to Clayton (Missouri) | 694.70 mi (1,118.02 km) |
| Frederick to Clayton (North Carolina) | 266.90 mi (429.53 km) |
| Frederick to Clayton (Ohio) | 369.00 mi (593.85 km) |
| Frederick to Clearfield (Utah) | 1,816.27 mi (2,923.00 km) |
| Frederick to Clearlake (California) | 2,395.53 mi (3,855.23 km) |
| Frederick to Clearwater (Florida) | 848.60 mi (1,365.69 km) |
| Frederick to Cleburne (Texas) | 1,218.13 mi (1,960.39 km) |
| Frederick to Clemmons (North Carolina) | 285.65 mi (459.71 km) |
