| Harrow to Castelletto sopra Ticino | 575.69 mi (926.49 km) |
| Harrow to Castelli Calepio | 621.98 mi (1,000.98 km) |
| Harrow to Castelnovo ne' Monti | 699.23 mi (1,125.31 km) |
| Harrow to Castelnuovo Berardenga | 791.99 mi (1,274.58 km) |
| Harrow to Castelnuovo di Porto | 888.94 mi (1,430.61 km) |
| Harrow to Castelnuovo di Verona | 661.59 mi (1,064.72 km) |
| Harrow to Castelnuovo Rangone | 710.86 mi (1,144.02 km) |
| Harrow to Castelvetrano | 1,153.61 mi (1,856.55 km) |
| Harrow to Castelvetro di Modena | 713.95 mi (1,149.00 km) |
| Harrow to Castenaso | 731.06 mi (1,176.53 km) |
| Harrow to Castenedolo | 643.51 mi (1,035.64 km) |
| Harrow to Castiglion Fiorentino | 805.66 mi (1,296.59 km) |
| Harrow to Castiglione del Lago | 820.65 mi (1,320.71 km) |
| Harrow to Castiglione delle Stiviere | 653.94 mi (1,052.41 km) |
| Harrow to Castrolibero | 1,161.56 mi (1,869.36 km) |
