| Portimao to Castelletto sopra Ticino | 1,065.49 mi (1,714.73 km) |
| Portimao to Castelli Calepio | 1,117.67 mi (1,798.72 km) |
| Portimao to Castelnovo ne' Monti | 1,107.98 mi (1,783.13 km) |
| Portimao to Castelnuovo Berardenga | 1,137.22 mi (1,830.18 km) |
| Portimao to Castelnuovo di Porto | 1,167.97 mi (1,879.67 km) |
| Portimao to Castelnuovo di Verona | 1,150.31 mi (1,851.24 km) |
| Portimao to Castelnuovo Rangone | 1,135.43 mi (1,827.30 km) |
| Portimao to Castelvetrano | 1,168.78 mi (1,880.97 km) |
| Portimao to Castelvetro di Modena | 1,135.03 mi (1,826.65 km) |
| Portimao to Castenaso | 1,159.43 mi (1,865.93 km) |
| Portimao to Castenedolo | 1,130.45 mi (1,819.28 km) |
| Portimao to Castiglion Fiorentino | 1,157.27 mi (1,862.45 km) |
| Portimao to Castiglione del Lago | 1,160.03 mi (1,866.89 km) |
| Portimao to Castiglione delle Stiviere | 1,137.52 mi (1,830.66 km) |
| Portimao to Castrolibero | 1,346.91 mi (2,167.64 km) |
