| Castalla to Smyrna (Delaware) | 3,902.26 mi (6,280.08 km) |
| Castalla to Smyrna (Georgia) | 4,514.78 mi (7,265.84 km) |
| Castalla to Smyrna (Tennessee) | 4,536.80 mi (7,301.28 km) |
| Castalla to Snellville (Georgia) | 4,489.85 mi (7,225.71 km) |
| Castalla to Snoqualmie (Washington) | 5,473.66 mi (8,809.01 km) |
| Castalla to Snyder (Texas) | 5,339.34 mi (8,592.85 km) |
| Castalla to Socastee (South Carolina) | 4,247.84 mi (6,836.23 km) |
| Castalla to Socorro (Texas) | 5,628.67 mi (9,058.48 km) |
| Castalla to Soddy-Daisy (Tennessee) | 4,497.08 mi (7,237.35 km) |
| Castalla to Solana Beach (California) | 6,034.89 mi (9,712.21 km) |
| Castalla to Soledad (California) | 6,020.97 mi (9,689.81 km) |
| Castalla to Solon (Ohio) | 4,115.82 mi (6,623.77 km) |
| Castalla to Somers Point (New Jersey) | 3,853.02 mi (6,200.83 km) |
| Castalla to Somerset (Kentucky) | 4,406.07 mi (7,090.88 km) |
| Castalla to Somerset (New Jersey) | 3,814.02 mi (6,138.07 km) |
