| Piqua to Clacton-on-Sea | 3,938.21 mi (6,337.94 km) |
| Piqua to Clay Cross | 3,801.70 mi (6,118.25 km) |
| Piqua to Clayton | 3,770.47 mi (6,067.98 km) |
| Piqua to Clayton le Moors | 3,748.96 mi (6,033.36 km) |
| Piqua to Cleckheaton | 3,775.51 mi (6,076.09 km) |
| Piqua to Cleethorpes | 3,844.34 mi (6,186.87 km) |
| Piqua to Clevedon | 3,790.73 mi (6,100.59 km) |
| Piqua to Clifton | 3,817.60 mi (6,143.83 km) |
| Piqua to Clifton | 3,792.67 mi (6,103.71 km) |
| Piqua to Cliftonville | 3,960.04 mi (6,373.06 km) |
| Piqua to Clitheroe | 3,746.27 mi (6,029.04 km) |
| Piqua to Clydebank | 3,623.73 mi (5,831.83 km) |
| Piqua to Coalville | 3,814.97 mi (6,139.59 km) |
| Piqua to Coatbridge | 3,638.29 mi (5,855.26 km) |
| Piqua to Cobham | 3,890.57 mi (6,261.27 km) |
