| Saint Helens to Cividale del Friuli | 879.54 mi (1,415.48 km) |
| Saint Helens to Civita Castellana | 1,038.60 mi (1,671.47 km) |
| Saint Helens to Civitanova Marche | 1,027.00 mi (1,652.79 km) |
| Saint Helens to Civitavecchia | 1,031.09 mi (1,659.38 km) |
| Saint Helens to Civitella in Val di Chiana | 955.86 mi (1,538.31 km) |
| Saint Helens to Clusone | 769.87 mi (1,238.98 km) |
| Saint Helens to Coccaglio | 787.18 mi (1,266.84 km) |
| Saint Helens to Codigoro | 894.59 mi (1,439.70 km) |
| Saint Helens to Codogno | 799.65 mi (1,286.91 km) |
| Saint Helens to Codroipo | 869.58 mi (1,399.45 km) |
| Saint Helens to Cogoleto | 810.16 mi (1,303.82 km) |
| Saint Helens to Colle di Val d'Elsa | 938.75 mi (1,510.78 km) |
| Saint Helens to Colle Salvetti | 908.06 mi (1,461.39 km) |
| Saint Helens to Collecchio | 837.42 mi (1,347.70 km) |
| Saint Helens to Colleferro | 1,088.40 mi (1,751.60 km) |
