| Philadelphia to Clacton-on-Sea | 3,583.45 mi (5,767.00 km) |
| Philadelphia to Clay Cross | 3,452.21 mi (5,555.79 km) |
| Philadelphia to Clayton | 3,424.71 mi (5,511.54 km) |
| Philadelphia to Clayton le Moors | 3,402.37 mi (5,475.58 km) |
| Philadelphia to Cleckheaton | 3,429.48 mi (5,519.22 km) |
| Philadelphia to Cleethorpes | 3,499.57 mi (5,632.01 km) |
| Philadelphia to Clevedon | 3,427.53 mi (5,516.07 km) |
| Philadelphia to Clifton | 3,466.67 mi (5,579.06 km) |
| Philadelphia to Clifton | 3,449.26 mi (5,551.04 km) |
| Philadelphia to Cliftonville | 3,603.09 mi (5,798.62 km) |
| Philadelphia to Clitheroe | 3,400.35 mi (5,472.33 km) |
| Philadelphia to Clydebank | 3,290.21 mi (5,295.08 km) |
| Philadelphia to Coalville | 3,462.53 mi (5,572.41 km) |
| Philadelphia to Coatbridge | 3,304.92 mi (5,318.76 km) |
| Philadelphia to Cobham | 3,530.35 mi (5,681.55 km) |
