| Guadarrama to Clay Cross | 872.07 mi (1,403.46 km) |
| Guadarrama to Clayton | 911.90 mi (1,467.57 km) |
| Guadarrama to Clayton le Moors | 908.73 mi (1,462.46 km) |
| Guadarrama to Cleckheaton | 908.52 mi (1,462.13 km) |
| Guadarrama to Cleethorpes | 909.89 mi (1,464.33 km) |
| Guadarrama to Clevedon | 746.13 mi (1,200.78 km) |
| Guadarrama to Clifton | 856.06 mi (1,377.70 km) |
| Guadarrama to Clifton | 929.29 mi (1,495.55 km) |
| Guadarrama to Cliftonville | 785.29 mi (1,263.81 km) |
| Guadarrama to Clitheroe | 915.31 mi (1,473.05 km) |
| Guadarrama to Clydebank | 1,052.17 mi (1,693.31 km) |
| Guadarrama to Coalville | 842.41 mi (1,355.73 km) |
| Guadarrama to Coatbridge | 1,049.51 mi (1,689.02 km) |
| Guadarrama to Cobham | 756.90 mi (1,218.12 km) |
| Guadarrama to Cockermouth | 967.09 mi (1,556.38 km) |
