| Hemel Hempstead to Cosham | 67.97 mi (109.38 km) |
| Hemel Hempstead to Costessey | 94.99 mi (152.88 km) |
| Hemel Hempstead to Cottingham | 140.25 mi (225.71 km) |
| Hemel Hempstead to Coulsdon | 33.03 mi (53.15 km) |
| Hemel Hempstead to Coventry | 63.30 mi (101.87 km) |
| Hemel Hempstead to Cowdenbeath | 323.00 mi (519.82 km) |
| Hemel Hempstead to Cowes | 77.45 mi (124.65 km) |
| Hemel Hempstead to Cowley | 15.53 mi (24.99 km) |
| Hemel Hempstead to Cowley | 31.94 mi (51.40 km) |
| Hemel Hempstead to Cramlington | 234.57 mi (377.51 km) |
| Hemel Hempstead to Cranleigh | 42.58 mi (68.53 km) |
| Hemel Hempstead to Crawley | 46.08 mi (74.17 km) |
| Hemel Hempstead to Crayford | 34.91 mi (56.19 km) |
| Hemel Hempstead to Crewe | 124.69 mi (200.66 km) |
| Hemel Hempstead to Crigglestone | 137.92 mi (221.96 km) |
