| Harrow Weald to Cadiz | 1,081.46 mi (1,740.44 km) |
| Harrow Weald to Calafell | 724.48 mi (1,165.94 km) |
| Harrow Weald to Calahorra | 647.37 mi (1,041.84 km) |
| Harrow Weald to Calasparra | 926.37 mi (1,490.84 km) |
| Harrow Weald to Calatayud | 711.12 mi (1,144.44 km) |
| Harrow Weald to Caldas de Montbuy | 699.02 mi (1,124.97 km) |
| Harrow Weald to Caldas de Reyes | 733.20 mi (1,179.98 km) |
| Harrow Weald to Calella | 704.45 mi (1,133.70 km) |
| Harrow Weald to Callosa de Segura | 931.85 mi (1,499.67 km) |
| Harrow Weald to Calpe | 895.57 mi (1,441.28 km) |
| Harrow Weald to Calvia | 842.90 mi (1,356.51 km) |
| Harrow Weald to Camas | 1,019.81 mi (1,641.22 km) |
| Harrow Weald to Cambados | 743.42 mi (1,196.42 km) |
| Harrow Weald to Cambre | 684.72 mi (1,101.95 km) |
| Harrow Weald to Cambrils | 731.04 mi (1,176.49 km) |
