| Silver Spring to Cividale del Friuli | 4,374.07 mi (7,039.38 km) |
| Silver Spring to Civita Castellana | 4,462.07 mi (7,181.00 km) |
| Silver Spring to Civitanova Marche | 4,484.23 mi (7,216.67 km) |
| Silver Spring to Civitavecchia | 4,442.06 mi (7,148.80 km) |
| Silver Spring to Civitella in Val di Chiana | 4,392.74 mi (7,069.43 km) |
| Silver Spring to Clusone | 4,234.54 mi (6,814.83 km) |
| Silver Spring to Coccaglio | 4,246.07 mi (6,833.39 km) |
| Silver Spring to Codigoro | 4,361.61 mi (7,019.34 km) |
| Silver Spring to Codogno | 4,247.42 mi (6,835.56 km) |
| Silver Spring to Codroipo | 4,359.78 mi (7,016.38 km) |
| Silver Spring to Cogoleto | 4,226.43 mi (6,801.78 km) |
| Silver Spring to Colle di Val d'Elsa | 4,367.87 mi (7,029.41 km) |
| Silver Spring to Colle Salvetti | 4,332.70 mi (6,972.81 km) |
| Silver Spring to Collecchio | 4,282.86 mi (6,892.60 km) |
| Silver Spring to Colleferro | 4,508.76 mi (7,256.15 km) |
