| Portimao to Cookeville (Tennessee) | 4,139.98 mi (6,662.65 km) |
| Portimao to Coolidge (Arizona) | 5,510.42 mi (8,868.16 km) |
| Portimao to Coon Rapids (Minnesota) | 4,239.06 mi (6,822.11 km) |
| Portimao to Cooper City (Florida) | 4,193.81 mi (6,749.29 km) |
| Portimao to Coos Bay (Oregon) | 5,568.53 mi (8,961.68 km) |
| Portimao to Copiague (New York) | 3,415.25 mi (5,496.31 km) |
| Portimao to Coppell (Texas) | 4,817.39 mi (7,752.84 km) |
| Portimao to Copperas Cove (Texas) | 4,931.21 mi (7,936.01 km) |
| Portimao to Coral Gables (Florida) | 4,204.80 mi (6,766.97 km) |
| Portimao to Coral Springs (Florida) | 4,184.69 mi (6,734.61 km) |
| Portimao to Coral Terrace (Florida) | 4,205.13 mi (6,767.50 km) |
| Portimao to Coralville (Iowa) | 4,265.51 mi (6,864.67 km) |
| Portimao to Coram (New York) | 3,391.53 mi (5,458.14 km) |
| Portimao to Corcoran (California) | 5,724.44 mi (9,212.59 km) |
| Portimao to Cordele (Georgia) | 4,182.27 mi (6,730.71 km) |
