| Portimao to Castrovillari | 1,346.47 mi (2,166.94 km) |
| Portimao to Catania | 1,295.18 mi (2,084.38 km) |
| Portimao to Catanzaro | 1,369.41 mi (2,203.85 km) |
| Portimao to Cattolica | 1,207.87 mi (1,943.87 km) |
| Portimao to Cava de' Tirreni | 1,269.33 mi (2,042.78 km) |
| Portimao to Cavallino | 1,452.24 mi (2,337.16 km) |
| Portimao to Cavarzere | 1,202.21 mi (1,934.76 km) |
| Portimao to Cave | 1,186.34 mi (1,909.22 km) |
| Portimao to Cavriago | 1,120.67 mi (1,803.54 km) |
| Portimao to Cavriglia | 1,139.36 mi (1,833.62 km) |
| Portimao to Cazzago San Martino | 1,121.68 mi (1,805.17 km) |
| Portimao to Ceccano | 1,204.33 mi (1,938.18 km) |
| Portimao to Cecina | 1,088.92 mi (1,752.45 km) |
| Portimao to Cefalu | 1,233.48 mi (1,985.09 km) |
| Portimao to Ceglie Messapico | 1,415.75 mi (2,278.43 km) |
