| Spa to Smyrna (Delaware) | 3,857.63 mi (6,208.25 km) |
| Spa to Smyrna (Georgia) | 4,474.53 mi (7,201.06 km) |
| Spa to Smyrna (Tennessee) | 4,451.38 mi (7,163.80 km) |
| Spa to Snellville (Georgia) | 4,454.15 mi (7,168.26 km) |
| Spa to Snoqualmie (Washington) | 4,985.65 mi (8,023.63 km) |
| Spa to Snyder (Texas) | 5,167.01 mi (8,315.50 km) |
| Spa to Socastee (South Carolina) | 4,257.84 mi (6,852.34 km) |
| Spa to Socorro (Texas) | 5,418.32 mi (8,719.95 km) |
| Spa to Soddy-Daisy (Tennessee) | 4,432.59 mi (7,133.57 km) |
| Spa to Solana Beach (California) | 5,707.93 mi (9,186.02 km) |
| Spa to Soledad (California) | 5,626.94 mi (9,055.68 km) |
| Spa to Solon (Ohio) | 3,995.16 mi (6,429.58 km) |
| Spa to Somers Point (New Jersey) | 3,815.78 mi (6,140.90 km) |
| Spa to Somerset (Kentucky) | 4,321.61 mi (6,954.96 km) |
| Spa to Somerset (New Jersey) | 3,758.71 mi (6,049.06 km) |
