| South Portland to Saarijarvi | 3,763.68 mi (6,057.05 km) |
| South Portland to Salo | 3,775.92 mi (6,076.75 km) |
| South Portland to Sastamala | 3,739.19 mi (6,017.64 km) |
| South Portland to Savonlinna | 3,893.60 mi (6,266.15 km) |
| South Portland to Seinajoki | 3,692.74 mi (5,942.89 km) |
| South Portland to Siilinjarvi | 3,817.94 mi (6,144.38 km) |
| South Portland to Sipoo | 3,840.73 mi (6,181.05 km) |
| South Portland to Sippola | 3,879.32 mi (6,243.16 km) |
| South Portland to Sodankyla | 3,651.89 mi (5,877.16 km) |
| South Portland to Somero | 3,779.77 mi (6,082.95 km) |
| South Portland to Sotkamo | 3,801.64 mi (6,118.16 km) |
| South Portland to Tampere | 3,759.31 mi (6,050.03 km) |
| South Portland to Tornio | 3,637.69 mi (5,854.29 km) |
| South Portland to Turku | 3,747.88 mi (6,031.63 km) |
| South Portland to Tuusula | 3,832.19 mi (6,167.31 km) |
