| Harrow to Caltagirone | 1,227.98 mi (1,976.25 km) |
| Harrow to Caltanissetta | 1,200.21 mi (1,931.56 km) |
| Harrow to Calvisano | 651.14 mi (1,047.91 km) |
| Harrow to Calvizzano | 1,009.77 mi (1,625.07 km) |
| Harrow to Camaiore | 722.40 mi (1,162.60 km) |
| Harrow to Cameri | 587.44 mi (945.39 km) |
| Harrow to Camisano Vicentino | 691.46 mi (1,112.79 km) |
| Harrow to Campagna | 1,052.29 mi (1,693.50 km) |
| Harrow to Campagnano di Roma | 885.24 mi (1,424.65 km) |
| Harrow to Campi Bisenzio | 755.25 mi (1,215.45 km) |
| Harrow to Campi Salentina | 1,166.29 mi (1,876.97 km) |
| Harrow to Campiglia Marittima | 779.28 mi (1,254.13 km) |
| Harrow to Campobasso | 990.08 mi (1,593.38 km) |
| Harrow to Campobello di Licata | 1,210.36 mi (1,947.88 km) |
| Harrow to Campobello di Mazara | 1,155.46 mi (1,859.53 km) |
