| Silver Spring to Castelfidardo | 4,470.34 mi (7,194.32 km) |
| Silver Spring to Castelfiorentino | 4,353.81 mi (7,006.77 km) |
| Silver Spring to Castelfranco di Sopra | 4,378.76 mi (7,046.93 km) |
| Silver Spring to Castelfranco di Sotto | 4,340.98 mi (6,986.13 km) |
| Silver Spring to Castelfranco Emilia | 4,323.98 mi (6,958.77 km) |
| Silver Spring to Castelfranco Veneto | 4,325.75 mi (6,961.62 km) |
| Silver Spring to Castellabate | 4,647.56 mi (7,479.53 km) |
| Silver Spring to Castellammare del Golfo | 4,637.75 mi (7,463.73 km) |
| Silver Spring to Castellammare di Stabia | 4,611.19 mi (7,421.00 km) |
| Silver Spring to Castellamonte | 4,154.33 mi (6,685.75 km) |
| Silver Spring to Castellana Grotte | 4,722.14 mi (7,599.55 km) |
| Silver Spring to Castellaneta | 4,721.48 mi (7,598.49 km) |
| Silver Spring to Castellanza | 4,198.17 mi (6,756.31 km) |
| Silver Spring to Castellarano | 4,313.37 mi (6,941.70 km) |
| Silver Spring to Castelleone | 4,245.42 mi (6,832.35 km) |
