| Slough to Castelfidardo | 860.21 mi (1,384.37 km) |
| Slough to Castelfiorentino | 765.66 mi (1,232.21 km) |
| Slough to Castelfranco di Sopra | 783.88 mi (1,261.54 km) |
| Slough to Castelfranco di Sotto | 753.38 mi (1,212.44 km) |
| Slough to Castelfranco Emilia | 717.57 mi (1,154.82 km) |
| Slough to Castelfranco Veneto | 698.78 mi (1,124.58 km) |
| Slough to Castellabate | 1,072.95 mi (1,726.75 km) |
| Slough to Castellammare del Golfo | 1,138.09 mi (1,831.59 km) |
| Slough to Castellammare di Stabia | 1,035.01 mi (1,665.69 km) |
| Slough to Castellamonte | 568.41 mi (914.76 km) |
| Slough to Castellana Grotte | 1,117.21 mi (1,797.97 km) |
| Slough to Castellaneta | 1,121.68 mi (1,805.17 km) |
| Slough to Castellanza | 594.05 mi (956.03 km) |
| Slough to Castellarano | 709.88 mi (1,142.45 km) |
| Slough to Castelleone | 638.91 mi (1,028.23 km) |
