| Harrow Weald to Castelletto sopra Ticino | 576.39 mi (927.60 km) |
| Harrow Weald to Castelli Calepio | 622.58 mi (1,001.95 km) |
| Harrow Weald to Castelnovo ne' Monti | 699.91 mi (1,126.40 km) |
| Harrow Weald to Castelnuovo Berardenga | 792.68 mi (1,275.69 km) |
| Harrow Weald to Castelnuovo di Porto | 889.65 mi (1,431.76 km) |
| Harrow Weald to Castelnuovo di Verona | 662.15 mi (1,065.63 km) |
| Harrow Weald to Castelnuovo Rangone | 711.50 mi (1,145.04 km) |
| Harrow Weald to Castelvetrano | 1,154.51 mi (1,858.00 km) |
| Harrow Weald to Castelvetro di Modena | 714.59 mi (1,150.03 km) |
| Harrow Weald to Castenaso | 731.67 mi (1,177.50 km) |
| Harrow Weald to Castenedolo | 644.11 mi (1,036.59 km) |
| Harrow Weald to Castiglion Fiorentino | 806.33 mi (1,297.66 km) |
| Harrow Weald to Castiglione del Lago | 821.33 mi (1,321.80 km) |
| Harrow Weald to Castiglione delle Stiviere | 654.52 mi (1,053.36 km) |
| Harrow Weald to Castrolibero | 1,162.24 mi (1,870.44 km) |
