| Portugalete to Caguas (Puerto Rico) | 4,015.66 mi (6,462.58 km) |
| Portugalete to Cahokia (Illinois) | 4,344.48 mi (6,991.76 km) |
| Portugalete to Calabasas (California) | 5,724.87 mi (9,213.29 km) |
| Portugalete to Caldwell (Idaho) | 5,167.28 mi (8,315.93 km) |
| Portugalete to Caledonia (Wisconsin) | 4,081.37 mi (6,568.33 km) |
| Portugalete to Calera (Alabama) | 4,408.15 mi (7,094.23 km) |
| Portugalete to Calexico (California) | 5,676.72 mi (9,135.80 km) |
| Portugalete to Calhoun (Georgia) | 4,268.87 mi (6,870.08 km) |
| Portugalete to California (Maryland) | 3,732.04 mi (6,006.14 km) |
| Portugalete to California City (California) | 5,642.09 mi (9,080.07 km) |
| Portugalete to Callaway (Florida) | 4,475.62 mi (7,202.81 km) |
| Portugalete to Calumet City (Illinois) | 4,111.43 mi (6,616.70 km) |
| Portugalete to Calverton (Maryland) | 3,726.66 mi (5,997.47 km) |
| Portugalete to Camano (Washington) | 5,124.41 mi (8,246.95 km) |
| Portugalete to Camarillo (California) | 5,734.13 mi (9,228.20 km) |
