| Hemel Hempstead to Clacton-on-Sea | 69.10 mi (111.20 km) |
| Hemel Hempstead to Clay Cross | 105.28 mi (169.43 km) |
| Hemel Hempstead to Clayton | 151.05 mi (243.10 km) |
| Hemel Hempstead to Clayton le Moors | 161.03 mi (259.15 km) |
| Hemel Hempstead to Cleckheaton | 145.96 mi (234.90 km) |
| Hemel Hempstead to Cleethorpes | 125.82 mi (202.49 km) |
| Hemel Hempstead to Clevedon | 104.64 mi (168.40 km) |
| Hemel Hempstead to Clifton | 84.98 mi (136.76 km) |
| Hemel Hempstead to Clifton | 155.58 mi (250.38 km) |
| Hemel Hempstead to Cliftonville | 84.32 mi (135.69 km) |
| Hemel Hempstead to Clitheroe | 166.93 mi (268.65 km) |
| Hemel Hempstead to Clydebank | 328.22 mi (528.22 km) |
| Hemel Hempstead to Coalville | 77.16 mi (124.18 km) |
| Hemel Hempstead to Coatbridge | 318.81 mi (513.07 km) |
| Hemel Hempstead to Cobham | 29.38 mi (47.29 km) |
