| Round Lake Beach to Cividale del Friuli | 4,660.60 mi (7,500.51 km) |
| Round Lake Beach to Civita Castellana | 4,785.48 mi (7,701.49 km) |
| Round Lake Beach to Civitanova Marche | 4,793.59 mi (7,714.53 km) |
| Round Lake Beach to Civitavecchia | 4,769.70 mi (7,676.10 km) |
| Round Lake Beach to Civitella in Val di Chiana | 4,709.67 mi (7,579.48 km) |
| Round Lake Beach to Clusone | 4,537.05 mi (7,301.68 km) |
| Round Lake Beach to Coccaglio | 4,551.35 mi (7,324.70 km) |
| Round Lake Beach to Codigoro | 4,664.68 mi (7,507.08 km) |
| Round Lake Beach to Codogno | 4,557.39 mi (7,334.41 km) |
| Round Lake Beach to Codroipo | 4,649.39 mi (7,482.47 km) |
| Round Lake Beach to Cogoleto | 4,547.44 mi (7,318.39 km) |
| Round Lake Beach to Colle di Val d'Elsa | 4,687.37 mi (7,543.60 km) |
| Round Lake Beach to Colle Salvetti | 4,653.17 mi (7,488.56 km) |
| Round Lake Beach to Collecchio | 4,594.41 mi (7,393.99 km) |
| Round Lake Beach to Colleferro | 4,834.21 mi (7,779.91 km) |
