| Portimao to Culpeper (Virginia) | 3,697.82 mi (5,951.07 km) |
| Portimao to Culver City (California) | 5,769.48 mi (9,285.09 km) |
| Portimao to Cumberland (Maryland) | 3,705.67 mi (5,963.71 km) |
| Portimao to Cupertino (California) | 5,769.72 mi (9,285.47 km) |
| Portimao to Cutler Bay (Florida) | 4,212.65 mi (6,779.60 km) |
| Portimao to Cutlerville (Michigan) | 3,957.09 mi (6,368.33 km) |
| Portimao to Cuyahoga Falls (Ohio) | 3,802.80 mi (6,120.02 km) |
| Portimao to Cypress (California) | 5,762.51 mi (9,273.86 km) |
| Portimao to Cypress Gardens (Florida) | 4,202.42 mi (6,763.13 km) |
| Portimao to Cypress Lake (Florida) | 4,263.64 mi (6,861.67 km) |
| Portimao to D'Iberville (Mississippi) | 4,497.38 mi (7,237.83 km) |
| Portimao to Dakota Ridge (Colorado) | 4,952.11 mi (7,969.65 km) |
| Portimao to Dale City (Virginia) | 3,660.46 mi (5,890.94 km) |
| Portimao to Dallas (Georgia) | 4,175.24 mi (6,719.39 km) |
| Portimao to Dallas (Oregon) | 5,462.55 mi (8,791.12 km) |
