| Rockville to Castelfidardo | 4,472.82 mi (7,198.30 km) |
| Rockville to Castelfiorentino | 4,356.42 mi (7,010.98 km) |
| Rockville to Castelfranco di Sopra | 4,381.33 mi (7,051.08 km) |
| Rockville to Castelfranco di Sotto | 4,343.59 mi (6,990.33 km) |
| Rockville to Castelfranco Emilia | 4,326.44 mi (6,962.73 km) |
| Rockville to Castelfranco Veneto | 4,328.00 mi (6,965.24 km) |
| Rockville to Castellabate | 4,650.40 mi (7,484.09 km) |
| Rockville to Castellammare del Golfo | 4,641.03 mi (7,469.02 km) |
| Rockville to Castellammare di Stabia | 4,614.00 mi (7,425.52 km) |
| Rockville to Castellamonte | 4,156.87 mi (6,689.83 km) |
| Rockville to Castellana Grotte | 4,724.74 mi (7,603.74 km) |
| Rockville to Castellaneta | 4,724.13 mi (7,602.76 km) |
| Rockville to Castellanza | 4,200.60 mi (6,760.22 km) |
| Rockville to Castellarano | 4,315.85 mi (6,945.69 km) |
| Rockville to Castelleone | 4,247.85 mi (6,836.26 km) |
