| Rock Island to Cividale del Friuli | 4,797.23 mi (7,720.39 km) |
| Rock Island to Civita Castellana | 4,924.55 mi (7,925.29 km) |
| Rock Island to Civitanova Marche | 4,931.73 mi (7,936.86 km) |
| Rock Island to Civitavecchia | 4,909.04 mi (7,900.33 km) |
| Rock Island to Civitella in Val di Chiana | 4,848.38 mi (7,802.71 km) |
| Rock Island to Clusone | 4,674.95 mi (7,523.60 km) |
| Rock Island to Coccaglio | 4,689.42 mi (7,546.90 km) |
| Rock Island to Codigoro | 4,802.50 mi (7,728.88 km) |
| Rock Island to Codogno | 4,695.76 mi (7,557.10 km) |
| Rock Island to Codroipo | 4,786.26 mi (7,702.75 km) |
| Rock Island to Cogoleto | 4,686.52 mi (7,542.23 km) |
| Rock Island to Colle di Val d'Elsa | 4,826.26 mi (7,767.12 km) |
| Rock Island to Colle Salvetti | 4,792.15 mi (7,712.22 km) |
| Rock Island to Collecchio | 4,732.86 mi (7,616.80 km) |
| Rock Island to Colleferro | 4,973.36 mi (8,003.86 km) |
