| Sofia to Smyrna (Delaware) | 4,840.38 mi (7,789.85 km) |
| Sofia to Smyrna (Georgia) | 5,458.19 mi (8,784.10 km) |
| Sofia to Smyrna (Tennessee) | 5,436.29 mi (8,748.86 km) |
| Sofia to Snellville (Georgia) | 5,437.51 mi (8,750.83 km) |
| Sofia to Snoqualmie (Washington) | 5,850.12 mi (9,414.86 km) |
| Sofia to Snyder (Texas) | 6,144.89 mi (9,889.24 km) |
| Sofia to Socastee (South Carolina) | 5,236.59 mi (8,427.48 km) |
| Sofia to Socorro (Texas) | 6,388.73 mi (10,281.67 km) |
| Sofia to Soddy-Daisy (Tennessee) | 5,417.19 mi (8,718.13 km) |
| Sofia to Solana Beach (California) | 6,642.50 mi (10,690.06 km) |
| Sofia to Soledad (California) | 6,533.42 mi (10,514.52 km) |
| Sofia to Solon (Ohio) | 4,979.84 mi (8,014.28 km) |
| Sofia to Somers Point (New Jersey) | 4,797.87 mi (7,721.43 km) |
| Sofia to Somerset (Kentucky) | 5,306.50 mi (8,539.99 km) |
| Sofia to Somerset (New Jersey) | 4,741.95 mi (7,631.43 km) |
