| Portalegre to Collegno | 862.47 mi (1,388.02 km) |
| Portalegre to Cologno al Serio | 971.45 mi (1,563.40 km) |
| Portalegre to Cologno Monzese | 951.03 mi (1,530.53 km) |
| Portalegre to Colorno | 988.60 mi (1,590.99 km) |
| Portalegre to Comacchio | 1,069.53 mi (1,721.24 km) |
| Portalegre to Comiso | 1,204.62 mi (1,938.65 km) |
| Portalegre to Como | 949.57 mi (1,528.18 km) |
| Portalegre to Concordia Sagittaria | 1,119.81 mi (1,802.16 km) |
| Portalegre to Concorezzo | 955.14 mi (1,537.15 km) |
| Portalegre to Conegliano | 1,096.75 mi (1,765.04 km) |
| Portalegre to Conselice | 1,049.85 mi (1,689.57 km) |
| Portalegre to Conselve | 1,063.87 mi (1,712.14 km) |
| Portalegre to Conversano | 1,296.54 mi (2,086.59 km) |
| Portalegre to Copertino | 1,348.96 mi (2,170.94 km) |
| Portalegre to Copparo | 1,056.25 mi (1,699.87 km) |
