| Frederick to Collegno | 4,157.41 mi (6,690.71 km) |
| Frederick to Cologno al Serio | 4,232.33 mi (6,811.28 km) |
| Frederick to Cologno Monzese | 4,216.15 mi (6,785.24 km) |
| Frederick to Colorno | 4,283.05 mi (6,892.91 km) |
| Frederick to Comacchio | 4,367.74 mi (7,029.19 km) |
| Frederick to Comiso | 4,759.97 mi (7,660.44 km) |
| Frederick to Como | 4,198.81 mi (6,757.33 km) |
| Frederick to Concordia Sagittaria | 4,358.92 mi (7,015.01 km) |
| Frederick to Concorezzo | 4,216.62 mi (6,785.99 km) |
| Frederick to Conegliano | 4,331.71 mi (6,971.21 km) |
| Frederick to Conselice | 4,359.17 mi (7,015.41 km) |
| Frederick to Conselve | 4,335.95 mi (6,978.04 km) |
| Frederick to Conversano | 4,716.42 mi (7,590.34 km) |
| Frederick to Copertino | 4,784.12 mi (7,699.30 km) |
| Frederick to Copparo | 4,345.97 mi (6,994.16 km) |
