| Duluth to Solofra | 4,907.81 mi (7,898.36 km) |
| Duluth to Somma Lombardo | 4,452.69 mi (7,165.91 km) |
| Duluth to Somma Vesuviana | 4,890.88 mi (7,871.11 km) |
| Duluth to Sommacampagna | 4,542.74 mi (7,310.84 km) |
| Duluth to Sona | 4,540.58 mi (7,307.36 km) |
| Duluth to Sondrio | 4,471.99 mi (7,196.98 km) |
| Duluth to Sora | 4,819.40 mi (7,756.08 km) |
| Duluth to Sorbolo | 4,554.48 mi (7,329.73 km) |
| Duluth to Soresina | 4,512.64 mi (7,262.39 km) |
| Duluth to Sorisole | 4,484.46 mi (7,217.05 km) |
| Duluth to Sorrento | 4,900.73 mi (7,886.97 km) |
| Duluth to Sorso | 4,676.53 mi (7,526.14 km) |
| Duluth to Sortino | 5,098.69 mi (8,205.55 km) |
| Duluth to Soverato Marina | 5,077.90 mi (8,172.09 km) |
| Duluth to Sovicille | 4,656.96 mi (7,494.66 km) |
