| Philadelphia to Clarksdale (Mississippi) | 938.95 mi (1,511.10 km) |
| Philadelphia to Clarkston (Georgia) | 659.94 mi (1,062.06 km) |
| Philadelphia to Clarksville (Indiana) | 581.04 mi (935.09 km) |
| Philadelphia to Clarksville (Tennessee) | 702.64 mi (1,130.79 km) |
| Philadelphia to Clawson (Michigan) | 451.24 mi (726.20 km) |
| Philadelphia to Clay (Alabama) | 768.87 mi (1,237.38 km) |
| Philadelphia to Clayton (California) | 2,488.67 mi (4,005.13 km) |
| Philadelphia to Clayton (Missouri) | 816.64 mi (1,314.25 km) |
| Philadelphia to Clayton (North Carolina) | 350.68 mi (564.36 km) |
| Philadelphia to Clayton (Ohio) | 487.01 mi (783.77 km) |
| Philadelphia to Clearfield (Utah) | 1,923.50 mi (3,095.57 km) |
| Philadelphia to Clearlake (California) | 2,503.47 mi (4,028.94 km) |
| Philadelphia to Clearwater (Florida) | 938.05 mi (1,509.65 km) |
| Philadelphia to Cleburne (Texas) | 1,345.60 mi (2,165.53 km) |
| Philadelphia to Clemmons (North Carolina) | 396.33 mi (637.83 km) |
