| Keystone to Castelfidardo | 5,194.31 mi (8,359.44 km) |
| Keystone to Castelfiorentino | 5,072.55 mi (8,163.48 km) |
| Keystone to Castelfranco di Sopra | 5,099.04 mi (8,206.11 km) |
| Keystone to Castelfranco di Sotto | 5,059.87 mi (8,143.07 km) |
| Keystone to Castelfranco Emilia | 5,049.35 mi (8,126.14 km) |
| Keystone to Castelfranco Veneto | 5,059.65 mi (8,142.72 km) |
| Keystone to Castellabate | 5,354.91 mi (8,617.90 km) |
| Keystone to Castellammare del Golfo | 5,323.62 mi (8,567.54 km) |
| Keystone to Castellammare di Stabia | 5,319.94 mi (8,561.61 km) |
| Keystone to Castellamonte | 4,877.67 mi (7,849.84 km) |
| Keystone to Castellana Grotte | 5,439.44 mi (8,753.94 km) |
| Keystone to Castellaneta | 5,436.61 mi (8,749.37 km) |
| Keystone to Castellanza | 4,925.49 mi (7,926.81 km) |
| Keystone to Castellarano | 5,037.95 mi (8,107.79 km) |
| Keystone to Castelleone | 4,972.46 mi (8,002.41 km) |
