| Portimao to Centralia (Illinois) | 4,245.27 mi (6,832.11 km) |
| Portimao to Centralia (Washington) | 5,366.66 mi (8,636.80 km) |
| Portimao to Centreville (Virginia) | 3,660.30 mi (5,890.69 km) |
| Portimao to Ceres (California) | 5,712.79 mi (9,193.84 km) |
| Portimao to Cerritos (California) | 5,761.52 mi (9,272.27 km) |
| Portimao to Chalco (Nebraska) | 4,490.81 mi (7,227.26 km) |
| Portimao to Chalmette (Louisiana) | 4,570.65 mi (7,355.75 km) |
| Portimao to Chambersburg (Pennsylvania) | 3,644.08 mi (5,864.58 km) |
| Portimao to Chamblee (Georgia) | 4,148.56 mi (6,676.47 km) |
| Portimao to Champaign (Illinois) | 4,156.45 mi (6,689.16 km) |
| Portimao to Champlin (Minnesota) | 4,242.78 mi (6,828.10 km) |
| Portimao to Chandler (Arizona) | 5,510.60 mi (8,868.46 km) |
| Portimao to Chanhassen (Minnesota) | 4,259.71 mi (6,855.35 km) |
| Portimao to Channahon (Illinois) | 4,117.75 mi (6,626.88 km) |
| Portimao to Channelview (Texas) | 4,839.68 mi (7,788.70 km) |
