| Helena to Cromer | 4,521.10 mi (7,276.00 km) |
| Helena to Crosby | 4,366.51 mi (7,027.22 km) |
| Helena to Crowborough | 4,580.39 mi (7,371.43 km) |
| Helena to Croxley Green | 4,533.13 mi (7,295.37 km) |
| Helena to Croydon | 4,556.75 mi (7,333.39 km) |
| Helena to Cudworth | 4,410.19 mi (7,097.51 km) |
| Helena to Culcheth | 4,383.50 mi (7,054.56 km) |
| Helena to Cullercoats | 4,339.90 mi (6,984.40 km) |
| Helena to Cumbernauld | 4,223.51 mi (6,797.08 km) |
| Helena to Cumnock | 4,238.32 mi (6,820.92 km) |
| Helena to Cupar | 4,234.35 mi (6,814.53 km) |
| Helena to Cwmbran | 4,454.34 mi (7,168.56 km) |
| Helena to Dagenham | 4,556.06 mi (7,332.26 km) |
| Helena to Dalkeith | 4,252.69 mi (6,844.04 km) |
| Helena to Darfield | 4,413.13 mi (7,102.24 km) |
