| Southend to Clacton-on-Sea | 25.05 mi (40.32 km) |
| Southend to Clay Cross | 143.01 mi (230.15 km) |
| Southend to Clayton | 186.96 mi (300.88 km) |
| Southend to Clayton le Moors | 201.07 mi (323.59 km) |
| Southend to Cleckheaton | 181.51 mi (292.12 km) |
| Southend to Cleethorpes | 141.78 mi (228.18 km) |
| Southend to Clevedon | 153.49 mi (247.02 km) |
| Southend to Clifton | 123.00 mi (197.94 km) |
| Southend to Clifton | 183.62 mi (295.50 km) |
| Southend to Cliftonville | 31.92 mi (51.37 km) |
| Southend to Clitheroe | 206.30 mi (332.00 km) |
| Southend to Clydebank | 365.80 mi (588.71 km) |
| Southend to Coalville | 119.79 mi (192.79 km) |
| Southend to Coatbridge | 355.22 mi (571.67 km) |
| Southend to Cobham | 50.55 mi (81.36 km) |
