| Boo to Castelfidardo | 1,113.24 mi (1,791.58 km) |
| Boo to Castelfiorentino | 1,128.67 mi (1,816.43 km) |
| Boo to Castelfranco di Sopra | 1,120.53 mi (1,803.32 km) |
| Boo to Castelfranco di Sotto | 1,124.49 mi (1,809.69 km) |
| Boo to Castelfranco Emilia | 1,060.74 mi (1,707.10 km) |
| Boo to Castelfranco Veneto | 978.78 mi (1,575.20 km) |
| Boo to Castellabate | 1,323.18 mi (2,129.46 km) |
| Boo to Castellammare del Golfo | 1,490.13 mi (2,398.13 km) |
| Boo to Castellammare di Stabia | 1,296.99 mi (2,087.31 km) |
| Boo to Castellamonte | 1,057.60 mi (1,702.05 km) |
| Boo to Castellana Grotte | 1,274.49 mi (2,051.09 km) |
| Boo to Castellaneta | 1,292.16 mi (2,079.53 km) |
| Boo to Castellanza | 1,022.83 mi (1,646.09 km) |
| Boo to Castellarano | 1,066.01 mi (1,715.57 km) |
| Boo to Castelleone | 1,031.05 mi (1,659.32 km) |
