| South Portland to Sonneberg | 3,671.46 mi (5,908.64 km) |
| South Portland to Sonsbeck | 3,445.87 mi (5,545.60 km) |
| South Portland to Sonthofen | 3,725.35 mi (5,995.38 km) |
| South Portland to Spaichingen | 3,643.95 mi (5,864.38 km) |
| South Portland to Spelle | 3,468.17 mi (5,581.48 km) |
| South Portland to Spenge | 3,514.04 mi (5,655.31 km) |
| South Portland to Speyer | 3,593.39 mi (5,783.00 km) |
| South Portland to Spiesen-Elversberg | 3,540.66 mi (5,698.14 km) |
| South Portland to Spremberg | 3,757.60 mi (6,047.28 km) |
| South Portland to Springe | 3,552.98 mi (5,717.97 km) |
| South Portland to Sprockhovel | 3,486.99 mi (5,611.77 km) |
| South Portland to Stade | 3,511.61 mi (5,651.39 km) |
| South Portland to Stadtallendorf | 3,572.02 mi (5,748.61 km) |
| South Portland to Stadthagen | 3,536.69 mi (5,691.75 km) |
| South Portland to Stadtlohn | 3,456.73 mi (5,563.07 km) |
