| Washougal to Solofra | 5,907.25 mi (9,506.80 km) |
| Washougal to Somma Lombardo | 5,461.75 mi (8,789.83 km) |
| Washougal to Somma Vesuviana | 5,894.53 mi (9,486.33 km) |
| Washougal to Sommacampagna | 5,533.29 mi (8,904.97 km) |
| Washougal to Sona | 5,530.90 mi (8,901.13 km) |
| Washougal to Sondrio | 5,463.27 mi (8,792.28 km) |
| Washougal to Sora | 5,822.87 mi (9,371.01 km) |
| Washougal to Sorbolo | 5,555.82 mi (8,941.22 km) |
| Washougal to Soresina | 5,514.79 mi (8,875.19 km) |
| Washougal to Sorisole | 5,483.19 mi (8,824.35 km) |
| Washougal to Sorrento | 5,907.76 mi (9,507.62 km) |
| Washougal to Sorso | 5,743.62 mi (9,243.46 km) |
| Washougal to Sortino | 6,134.81 mi (9,873.02 km) |
| Washougal to Soverato Marina | 6,080.79 mi (9,786.08 km) |
| Washougal to Sovicille | 5,668.41 mi (9,122.43 km) |
