| Cities | Distance |
|---|---|
| Harpenden to Cosham | 74.08 mi (119.22 km) |
| Harpenden to Costessey | 88.28 mi (142.08 km) |
| Harpenden to Cottingham | 135.77 mi (218.50 km) |
| Harpenden to Coulsdon | 35.51 mi (57.14 km) |
| Harpenden to Coventry | 63.88 mi (102.80 km) |
| Harpenden to Cowdenbeath | 320.56 mi (515.89 km) |
| Harpenden to Cowes | 83.79 mi (134.85 km) |
| Harpenden to Cowley | 20.75 mi (33.39 km) |
| Harpenden to Cowley | 37.34 mi (60.09 km) |
| Harpenden to Cramlington | 231.18 mi (372.04 km) |
| Harpenden to Cranleigh | 47.38 mi (76.25 km) |
| Harpenden to Crawley | 49.45 mi (79.59 km) |
| Harpenden to Crayford | 34.23 mi (55.08 km) |
| Harpenden to Crewe | 124.75 mi (200.76 km) |
| Harpenden to Crigglestone | 135.36 mi (217.84 km) |