| Cascais to Cividale del Friuli | 1,267.20 mi (2,039.35 km) |
| Cascais to Civita Castellana | 1,169.93 mi (1,882.81 km) |
| Cascais to Civitanova Marche | 1,243.83 mi (2,001.75 km) |
| Cascais to Civitavecchia | 1,137.66 mi (1,830.89 km) |
| Cascais to Civitella in Val di Chiana | 1,144.67 mi (1,842.17 km) |
| Cascais to Clusone | 1,103.36 mi (1,775.68 km) |
| Cascais to Coccaglio | 1,097.34 mi (1,766.00 km) |
| Cascais to Codigoro | 1,183.46 mi (1,904.59 km) |
| Cascais to Codogno | 1,076.01 mi (1,731.68 km) |
| Cascais to Codroipo | 1,243.66 mi (2,001.47 km) |
| Cascais to Cogoleto | 1,010.65 mi (1,626.48 km) |
| Cascais to Colle di Val d'Elsa | 1,115.61 mi (1,795.39 km) |
| Cascais to Colle Salvetti | 1,086.13 mi (1,747.96 km) |
| Cascais to Collecchio | 1,091.83 mi (1,757.13 km) |
| Cascais to Colleferro | 1,198.45 mi (1,928.71 km) |
