| Castle Rock to Cividale del Friuli | 5,408.64 mi (8,704.37 km) |
| Castle Rock to Civita Castellana | 5,562.13 mi (8,951.39 km) |
| Castle Rock to Civitanova Marche | 5,558.55 mi (8,945.63 km) |
| Castle Rock to Civitavecchia | 5,550.01 mi (8,931.87 km) |
| Castle Rock to Civitella in Val di Chiana | 5,482.26 mi (8,822.85 km) |
| Castle Rock to Clusone | 5,300.79 mi (8,530.80 km) |
| Castle Rock to Coccaglio | 5,317.11 mi (8,557.06 km) |
| Castle Rock to Codigoro | 5,426.62 mi (8,733.30 km) |
| Castle Rock to Codogno | 5,326.86 mi (8,572.76 km) |
| Castle Rock to Codroipo | 5,400.28 mi (8,690.91 km) |
| Castle Rock to Cogoleto | 5,325.95 mi (8,571.29 km) |
| Castle Rock to Colle di Val d'Elsa | 5,462.42 mi (8,790.91 km) |
| Castle Rock to Colle Salvetti | 5,429.55 mi (8,738.02 km) |
| Castle Rock to Collecchio | 5,364.54 mi (8,633.39 km) |
| Castle Rock to Colleferro | 5,611.74 mi (9,031.23 km) |
