| Castelo Branco to Clay Cross | 965.71 mi (1,554.15 km) |
| Castelo Branco to Clayton | 1,000.89 mi (1,610.77 km) |
| Castelo Branco to Clayton le Moors | 993.67 mi (1,599.15 km) |
| Castelo Branco to Cleckheaton | 998.32 mi (1,606.65 km) |
| Castelo Branco to Cleethorpes | 1,011.79 mi (1,628.32 km) |
| Castelo Branco to Clevedon | 833.31 mi (1,341.08 km) |
| Castelo Branco to Clifton | 952.26 mi (1,532.52 km) |
| Castelo Branco to Clifton | 1,022.65 mi (1,645.80 km) |
| Castelo Branco to Cliftonville | 906.48 mi (1,458.83 km) |
| Castelo Branco to Clitheroe | 999.97 mi (1,609.29 km) |
| Castelo Branco to Clydebank | 1,120.19 mi (1,802.78 km) |
| Castelo Branco to Coalville | 937.80 mi (1,509.24 km) |
| Castelo Branco to Coatbridge | 1,119.94 mi (1,802.37 km) |
| Castelo Branco to Cobham | 865.22 mi (1,392.44 km) |
| Castelo Branco to Cockermouth | 1,043.41 mi (1,679.20 km) |
