| Povoa de Santa Iria to Clarkston (Georgia) | 4,077.93 mi (6,562.79 km) |
| Povoa de Santa Iria to Clarksville (Indiana) | 4,008.81 mi (6,451.56 km) |
| Povoa de Santa Iria to Clarksville (Tennessee) | 4,141.29 mi (6,664.76 km) |
| Povoa de Santa Iria to Clawson (Michigan) | 3,761.43 mi (6,053.44 km) |
| Povoa de Santa Iria to Clay (Alabama) | 4,200.83 mi (6,760.59 km) |
| Povoa de Santa Iria to Clayton (California) | 5,633.51 mi (9,066.27 km) |
| Povoa de Santa Iria to Clayton (Missouri) | 4,217.32 mi (6,787.13 km) |
| Povoa de Santa Iria to Clayton (North Carolina) | 3,727.19 mi (5,998.33 km) |
| Povoa de Santa Iria to Clayton (Ohio) | 3,892.69 mi (6,264.68 km) |
| Povoa de Santa Iria to Clearfield (Utah) | 5,090.99 mi (8,193.15 km) |
| Povoa de Santa Iria to Clearlake (California) | 5,612.49 mi (9,032.42 km) |
| Povoa de Santa Iria to Clearwater (Florida) | 4,202.76 mi (6,763.69 km) |
| Povoa de Santa Iria to Cleburne (Texas) | 4,782.61 mi (7,696.87 km) |
| Povoa de Santa Iria to Clemmons (North Carolina) | 3,813.55 mi (6,137.32 km) |
| Povoa de Santa Iria to Clemson (South Carolina) | 3,977.60 mi (6,401.33 km) |
