| Middlesex to Clacton-on-Sea | 3,532.74 mi (5,685.40 km) |
| Middlesex to Clay Cross | 3,401.35 mi (5,473.94 km) |
| Middlesex to Clayton | 3,373.76 mi (5,429.55 km) |
| Middlesex to Clayton le Moors | 3,351.43 mi (5,393.61 km) |
| Middlesex to Cleckheaton | 3,378.54 mi (5,437.24 km) |
| Middlesex to Cleethorpes | 3,448.61 mi (5,550.00 km) |
| Middlesex to Clevedon | 3,377.05 mi (5,434.84 km) |
| Middlesex to Clifton | 3,415.85 mi (5,497.27 km) |
| Middlesex to Clifton | 3,398.26 mi (5,468.97 km) |
| Middlesex to Cliftonville | 3,552.45 mi (5,717.12 km) |
| Middlesex to Clitheroe | 3,349.40 mi (5,390.34 km) |
| Middlesex to Clydebank | 3,239.02 mi (5,212.70 km) |
| Middlesex to Coalville | 3,411.75 mi (5,490.68 km) |
| Middlesex to Coatbridge | 3,253.73 mi (5,236.37 km) |
| Middlesex to Cobham | 3,479.80 mi (5,600.19 km) |
