| Portalegre to Cividale del Friuli | 1,153.20 mi (1,855.89 km) |
| Portalegre to Civita Castellana | 1,054.59 mi (1,697.19 km) |
| Portalegre to Civitanova Marche | 1,128.31 mi (1,815.84 km) |
| Portalegre to Civitavecchia | 1,022.39 mi (1,645.38 km) |
| Portalegre to Civitella in Val di Chiana | 1,029.17 mi (1,656.29 km) |
| Portalegre to Clusone | 990.07 mi (1,593.36 km) |
| Portalegre to Coccaglio | 983.61 mi (1,582.97 km) |
| Portalegre to Codigoro | 1,068.55 mi (1,719.67 km) |
| Portalegre to Codogno | 961.87 mi (1,547.98 km) |
| Portalegre to Codroipo | 1,129.61 mi (1,817.93 km) |
| Portalegre to Cogoleto | 895.94 mi (1,441.87 km) |
| Portalegre to Colle di Val d'Elsa | 1,000.11 mi (1,609.53 km) |
| Portalegre to Colle Salvetti | 970.71 mi (1,562.21 km) |
| Portalegre to Collecchio | 977.15 mi (1,572.57 km) |
| Portalegre to Colleferro | 1,083.42 mi (1,743.60 km) |
