| Duluth to Sesena | 4,219.97 mi (6,791.39 km) |
| Duluth to Sestao | 4,111.80 mi (6,617.31 km) |
| Duluth to Sevilla | 4,247.35 mi (6,835.45 km) |
| Duluth to Sevilla La Nueva | 4,195.84 mi (6,752.55 km) |
| Duluth to Silla | 4,387.58 mi (7,061.13 km) |
| Duluth to Silleda | 3,924.37 mi (6,315.66 km) |
| Duluth to Sitges | 4,393.27 mi (7,070.28 km) |
| Duluth to Socuellamos | 4,292.52 mi (6,908.14 km) |
| Duluth to Soller | 4,495.08 mi (7,234.14 km) |
| Duluth to Solsona | 4,348.12 mi (6,997.62 km) |
| Duluth to Son Servera | 4,528.08 mi (7,287.25 km) |
| Duluth to Sonseca | 4,226.92 mi (6,802.57 km) |
| Duluth to Sopelana | 4,109.90 mi (6,614.24 km) |
| Duluth to Soria | 4,198.92 mi (6,757.51 km) |
| Duluth to Suances | 4,064.87 mi (6,541.78 km) |
