| Harpenden to Campodarsego | 708.41 mi (1,140.08 km) |
| Harpenden to Campogalliano | 711.69 mi (1,145.35 km) |
| Harpenden to Campolongo Maggiore | 720.97 mi (1,160.29 km) |
| Harpenden to Camponogara | 719.22 mi (1,157.48 km) |
| Harpenden to Camposampiero | 705.91 mi (1,136.05 km) |
| Harpenden to Canegrate | 603.98 mi (972.02 km) |
| Harpenden to Canelli | 630.38 mi (1,014.50 km) |
| Harpenden to Canicatti | 1,214.01 mi (1,953.76 km) |
| Harpenden to Canosa di Puglia | 1,065.91 mi (1,715.41 km) |
| Harpenden to Cantu | 601.80 mi (968.51 km) |
| Harpenden to Caorle | 738.95 mi (1,189.23 km) |
| Harpenden to Capaci | 1,149.29 mi (1,849.61 km) |
| Harpenden to Capannori | 746.45 mi (1,201.29 km) |
| Harpenden to Capena | 900.94 mi (1,449.93 km) |
| Harpenden to Capo d'Orlando | 1,193.06 mi (1,920.04 km) |
