| Porto to Cividale del Friuli | 1,150.20 mi (1,851.07 km) |
| Porto to Civita Castellana | 1,084.56 mi (1,745.43 km) |
| Porto to Civitanova Marche | 1,149.68 mi (1,850.23 km) |
| Porto to Civitavecchia | 1,054.13 mi (1,696.45 km) |
| Porto to Civitella in Val di Chiana | 1,048.47 mi (1,687.35 km) |
| Porto to Clusone | 983.22 mi (1,582.34 km) |
| Porto to Coccaglio | 979.92 mi (1,577.04 km) |
| Porto to Codigoro | 1,075.03 mi (1,730.09 km) |
| Porto to Codogno | 961.65 mi (1,547.63 km) |
| Porto to Codroipo | 1,127.17 mi (1,814.00 km) |
| Porto to Cogoleto | 901.82 mi (1,451.33 km) |
| Porto to Colle di Val d'Elsa | 1,019.17 mi (1,640.19 km) |
| Porto to Colle Salvetti | 987.25 mi (1,588.82 km) |
| Porto to Collecchio | 981.88 mi (1,580.18 km) |
| Porto to Colleferro | 1,118.40 mi (1,799.89 km) |
