| Duluth to Senftenberg | 4,362.54 mi (7,020.82 km) |
| Duluth to Siegburg | 4,171.05 mi (6,712.66 km) |
| Duluth to Siegen | 4,194.95 mi (6,751.12 km) |
| Duluth to Sigmaringen | 4,360.96 mi (7,018.29 km) |
| Duluth to Simbach am Inn | 4,482.47 mi (7,213.83 km) |
| Duluth to Simmerath | 4,148.90 mi (6,677.00 km) |
| Duluth to Sindelfingen | 4,325.17 mi (6,960.68 km) |
| Duluth to Sinsheim | 4,296.89 mi (6,915.17 km) |
| Duluth to Sinzheim | 4,294.05 mi (6,910.61 km) |
| Duluth to Sinzig | 4,183.81 mi (6,733.20 km) |
| Duluth to Soest | 4,167.97 mi (6,707.71 km) |
| Duluth to Solingen | 4,151.11 mi (6,680.57 km) |
| Duluth to Soltau | 4,162.55 mi (6,698.98 km) |
| Duluth to Sommerda | 4,285.47 mi (6,896.80 km) |
| Duluth to Sondershausen | 4,268.02 mi (6,868.72 km) |
