| Povoa de Santa Iria to Smyrna (Delaware) | 3,483.09 mi (5,605.49 km) |
| Povoa de Santa Iria to Smyrna (Georgia) | 4,090.15 mi (6,582.45 km) |
| Povoa de Santa Iria to Smyrna (Tennessee) | 4,120.94 mi (6,632.02 km) |
| Povoa de Santa Iria to Snellville (Georgia) | 4,064.53 mi (6,541.24 km) |
| Povoa de Santa Iria to Snoqualmie (Washington) | 5,179.97 mi (8,336.36 km) |
| Povoa de Santa Iria to Snyder (Texas) | 4,937.15 mi (7,945.57 km) |
| Povoa de Santa Iria to Socastee (South Carolina) | 3,816.15 mi (6,141.51 km) |
| Povoa de Santa Iria to Socorro (Texas) | 5,233.85 mi (8,423.07 km) |
| Povoa de Santa Iria to Soddy-Daisy (Tennessee) | 4,077.22 mi (6,561.65 km) |
| Povoa de Santa Iria to Solana Beach (California) | 5,671.04 mi (9,126.65 km) |
| Povoa de Santa Iria to Soledad (California) | 5,681.13 mi (9,142.90 km) |
| Povoa de Santa Iria to Solon (Ohio) | 3,711.58 mi (5,973.22 km) |
| Povoa de Santa Iria to Somers Point (New Jersey) | 3,432.79 mi (5,524.53 km) |
| Povoa de Santa Iria to Somerset (Kentucky) | 3,991.01 mi (6,422.91 km) |
| Povoa de Santa Iria to Somerset (New Jersey) | 3,397.87 mi (5,468.35 km) |
