| Harrow Weald to Collegno | 578.41 mi (930.86 km) |
| Harrow Weald to Cologno al Serio | 618.28 mi (995.02 km) |
| Harrow Weald to Cologno Monzese | 606.99 mi (976.85 km) |
| Harrow Weald to Colorno | 673.72 mi (1,084.25 km) |
| Harrow Weald to Comacchio | 747.06 mi (1,202.27 km) |
| Harrow Weald to Comiso | 1,248.30 mi (2,008.95 km) |
| Harrow Weald to Como | 586.44 mi (943.79 km) |
| Harrow Weald to Concordia Sagittaria | 722.62 mi (1,162.94 km) |
| Harrow Weald to Concorezzo | 605.80 mi (974.94 km) |
| Harrow Weald to Conegliano | 696.70 mi (1,121.23 km) |
| Harrow Weald to Conselice | 743.76 mi (1,196.97 km) |
| Harrow Weald to Conselve | 710.50 mi (1,143.43 km) |
| Harrow Weald to Conversano | 1,106.11 mi (1,780.12 km) |
| Harrow Weald to Copertino | 1,174.83 mi (1,890.70 km) |
| Harrow Weald to Copparo | 725.12 mi (1,166.96 km) |
