| Royston to Castelletto sopra Ticino | 587.33 mi (945.22 km) |
| Royston to Castelli Calepio | 631.31 mi (1,016.00 km) |
| Royston to Castelnovo ne' Monti | 710.42 mi (1,143.31 km) |
| Royston to Castelnuovo Berardenga | 803.40 mi (1,292.94 km) |
| Royston to Castelnuovo di Porto | 900.81 mi (1,449.72 km) |
| Royston to Castelnuovo di Verona | 669.84 mi (1,078.00 km) |
| Royston to Castelnuovo Rangone | 720.86 mi (1,160.12 km) |
| Royston to Castelvetrano | 1,170.31 mi (1,883.44 km) |
| Royston to Castelvetro di Modena | 724.04 mi (1,165.22 km) |
| Royston to Castenaso | 740.24 mi (1,191.30 km) |
| Royston to Castenedolo | 652.52 mi (1,050.13 km) |
| Royston to Castiglion Fiorentino | 816.41 mi (1,313.88 km) |
| Royston to Castiglione del Lago | 831.56 mi (1,338.27 km) |
| Royston to Castiglione delle Stiviere | 662.75 mi (1,066.59 km) |
| Royston to Castrolibero | 1,172.23 mi (1,886.53 km) |
