| Alcala la Real to Smyrna (Delaware) | 3,778.29 mi (6,080.57 km) |
| Alcala la Real to Smyrna (Georgia) | 4,386.13 mi (7,058.80 km) |
| Alcala la Real to Smyrna (Tennessee) | 4,415.71 mi (7,106.41 km) |
| Alcala la Real to Snellville (Georgia) | 4,360.58 mi (7,017.68 km) |
| Alcala la Real to Snoqualmie (Washington) | 5,431.40 mi (8,740.99 km) |
| Alcala la Real to Snyder (Texas) | 5,229.23 mi (8,415.63 km) |
| Alcala la Real to Socastee (South Carolina) | 4,112.54 mi (6,618.49 km) |
| Alcala la Real to Socorro (Texas) | 5,524.12 mi (8,890.22 km) |
| Alcala la Real to Soddy-Daisy (Tennessee) | 4,372.62 mi (7,037.06 km) |
| Alcala la Real to Solana Beach (California) | 5,951.70 mi (9,578.33 km) |
| Alcala la Real to Soledad (California) | 5,952.76 mi (9,580.04 km) |
| Alcala la Real to Solon (Ohio) | 4,003.78 mi (6,443.47 km) |
| Alcala la Real to Somers Point (New Jersey) | 3,728.14 mi (5,999.86 km) |
| Alcala la Real to Somerset (Kentucky) | 4,285.62 mi (6,897.03 km) |
| Alcala la Real to Somerset (New Jersey) | 3,692.54 mi (5,942.57 km) |
