| Duluth to Sinop | 5,503.47 mi (8,856.99 km) |
| Duluth to Siran | 5,721.60 mi (9,208.02 km) |
| Duluth to Sirnak | 5,971.20 mi (9,609.72 km) |
| Duluth to Sirvan | 5,926.93 mi (9,538.48 km) |
| Duluth to Sivas | 5,688.46 mi (9,154.69 km) |
| Duluth to Sivasli | 5,539.05 mi (8,914.24 km) |
| Duluth to Siverek | 5,871.15 mi (9,448.70 km) |
| Duluth to Sivrice | 5,829.76 mi (9,382.09 km) |
| Duluth to Sivrihisar | 5,543.09 mi (8,920.73 km) |
| Duluth to Sogut | 5,469.12 mi (8,801.69 km) |
| Duluth to Sogutlu | 5,429.24 mi (8,737.52 km) |
| Duluth to Soke | 5,505.70 mi (8,860.57 km) |
| Duluth to Solhan | 5,846.52 mi (9,409.06 km) |
| Duluth to Soma | 5,433.21 mi (8,743.90 km) |
| Duluth to Sorgun | 5,632.04 mi (9,063.90 km) |
