| Portimao to Chantilly (Virginia) | 3,659.42 mi (5,889.27 km) |
| Portimao to Chaparral (New Mexico) | 5,308.52 mi (8,543.24 km) |
| Portimao to Chapel Hill (North Carolina) | 3,818.77 mi (6,145.71 km) |
| Portimao to Charleston (Illinois) | 4,170.54 mi (6,711.83 km) |
| Portimao to Charleston (South Carolina) | 3,957.61 mi (6,369.16 km) |
| Portimao to Charleston (West Virginia) | 3,882.62 mi (6,248.47 km) |
| Portimao to Charlotte (North Carolina) | 3,930.96 mi (6,326.27 km) |
| Portimao to Charlottesville (Virginia) | 3,733.46 mi (6,008.43 km) |
| Portimao to Chaska (Minnesota) | 4,262.93 mi (6,860.52 km) |
| Portimao to Chatham (Illinois) | 4,237.47 mi (6,819.55 km) |
| Portimao to Chattanooga (Tennessee) | 4,159.99 mi (6,694.86 km) |
| Portimao to Cheat Lake (West Virginia) | 3,759.60 mi (6,050.50 km) |
| Portimao to Chelsea (Alabama) | 4,285.29 mi (6,896.51 km) |
| Portimao to Chelsea (Massachusetts) | 3,263.81 mi (5,252.60 km) |
| Portimao to Cheney (Washington) | 5,138.97 mi (8,270.38 km) |
