| South Portland to Schaffhausen | 3,651.37 mi (5,876.32 km) |
| South Portland to Schlieren | 3,653.18 mi (5,879.22 km) |
| South Portland to Schubelbach | 3,680.20 mi (5,922.71 km) |
| South Portland to Schwyz | 3,673.65 mi (5,912.17 km) |
| South Portland to Sierre | 3,649.43 mi (5,873.20 km) |
| South Portland to Sion | 3,644.48 mi (5,865.23 km) |
| South Portland to Solothurn | 3,620.62 mi (5,826.82 km) |
| South Portland to Spiez | 3,642.94 mi (5,862.74 km) |
| South Portland to Spreitenbach | 3,649.18 mi (5,872.79 km) |
| South Portland to Stafa | 3,669.90 mi (5,906.13 km) |
| South Portland to Stans | 3,663.22 mi (5,895.38 km) |
| South Portland to Steffisburg | 3,638.90 mi (5,856.24 km) |
| South Portland to Stegen | 3,664.09 mi (5,896.78 km) |
| South Portland to Steinhaus | 3,661.09 mi (5,891.95 km) |
| South Portland to Suhr | 3,638.57 mi (5,855.72 km) |
