| Boone to Castelfidardo | 4,789.42 mi (7,707.83 km) |
| Boone to Castelfiorentino | 4,672.92 mi (7,520.34 km) |
| Boone to Castelfranco di Sopra | 4,697.87 mi (7,560.49 km) |
| Boone to Castelfranco di Sotto | 4,660.09 mi (7,499.69 km) |
| Boone to Castelfranco Emilia | 4,643.05 mi (7,472.27 km) |
| Boone to Castelfranco Veneto | 4,644.61 mi (7,474.77 km) |
| Boone to Castellabate | 4,966.57 mi (7,992.93 km) |
| Boone to Castellammare del Golfo | 4,955.91 mi (7,975.77 km) |
| Boone to Castellammare di Stabia | 4,930.23 mi (7,934.43 km) |
| Boone to Castellamonte | 4,473.44 mi (7,199.30 km) |
| Boone to Castellana Grotte | 5,041.25 mi (8,113.12 km) |
| Boone to Castellaneta | 5,040.59 mi (8,112.05 km) |
| Boone to Castellanza | 4,517.23 mi (7,269.77 km) |
| Boone to Castellarano | 4,632.45 mi (7,455.21 km) |
| Boone to Castelleone | 4,564.47 mi (7,345.81 km) |
