| Silver Spring to Collegno | 4,157.78 mi (6,691.29 km) |
| Silver Spring to Cologno al Serio | 4,233.53 mi (6,813.20 km) |
| Silver Spring to Cologno Monzese | 4,217.22 mi (6,786.95 km) |
| Silver Spring to Colorno | 4,284.00 mi (6,894.44 km) |
| Silver Spring to Comacchio | 4,368.99 mi (7,031.20 km) |
| Silver Spring to Comiso | 4,757.32 mi (7,656.16 km) |
| Silver Spring to Como | 4,200.01 mi (6,759.26 km) |
| Silver Spring to Concordia Sagittaria | 4,361.00 mi (7,018.35 km) |
| Silver Spring to Concorezzo | 4,217.73 mi (6,787.78 km) |
| Silver Spring to Conegliano | 4,333.73 mi (6,974.46 km) |
| Silver Spring to Conselice | 4,360.22 mi (7,017.10 km) |
| Silver Spring to Conselve | 4,337.46 mi (6,980.46 km) |
| Silver Spring to Conversano | 4,716.78 mi (7,590.93 km) |
| Silver Spring to Copertino | 4,784.36 mi (7,699.69 km) |
| Silver Spring to Copparo | 4,347.26 mi (6,996.23 km) |
