| Portimao to Cicero (Illinois) | 4,082.14 mi (6,569.57 km) |
| Portimao to Cimarron Hills (Colorado) | 4,961.63 mi (7,984.97 km) |
| Portimao to Cincinnati (Ohio) | 4,002.33 mi (6,441.12 km) |
| Portimao to Cinco Ranch (Texas) | 4,874.37 mi (7,844.53 km) |
| Portimao to Circleville (Ohio) | 3,912.50 mi (6,296.56 km) |
| Portimao to Citrus (California) | 5,742.53 mi (9,241.71 km) |
| Portimao to Citrus Heights (California) | 5,675.05 mi (9,133.11 km) |
| Portimao to Citrus Park (Florida) | 4,246.78 mi (6,834.53 km) |
| Portimao to Claiborne (Louisiana) | 4,593.91 mi (7,393.18 km) |
| Portimao to Claremont (California) | 5,734.55 mi (9,228.86 km) |
| Portimao to Claremont (New Hampshire) | 3,309.28 mi (5,325.77 km) |
| Portimao to Claremore (Oklahoma) | 4,630.86 mi (7,452.65 km) |
| Portimao to Clarksburg (Maryland) | 3,642.03 mi (5,861.28 km) |
| Portimao to Clarksburg (West Virginia) | 3,792.54 mi (6,103.51 km) |
| Portimao to Clarksdale (Mississippi) | 4,455.69 mi (7,170.74 km) |
