| Idrija to Clay Cross | 847.55 mi (1,364.00 km) |
| Idrija to Clayton | 883.32 mi (1,421.56 km) |
| Idrija to Clayton le Moors | 903.16 mi (1,453.50 km) |
| Idrija to Cleckheaton | 877.98 mi (1,412.97 km) |
| Idrija to Cleethorpes | 813.01 mi (1,308.42 km) |
| Idrija to Clevedon | 853.58 mi (1,373.71 km) |
| Idrija to Clifton | 830.24 mi (1,336.14 km) |
| Idrija to Clifton | 865.64 mi (1,393.12 km) |
| Idrija to Cliftonville | 684.05 mi (1,100.87 km) |
| Idrija to Clitheroe | 906.75 mi (1,459.27 km) |
| Idrija to Clydebank | 1,048.23 mi (1,686.97 km) |
| Idrija to Coalville | 831.39 mi (1,337.99 km) |
| Idrija to Coatbridge | 1,034.71 mi (1,665.20 km) |
| Idrija to Cobham | 752.73 mi (1,211.41 km) |
| Idrija to Cockermouth | 968.23 mi (1,558.22 km) |
