| Duluth to Sestu | 4,767.71 mi (7,672.90 km) |
| Duluth to Settimo Torinese | 4,444.13 mi (7,152.13 km) |
| Duluth to Seveso | 4,470.25 mi (7,194.17 km) |
| Duluth to Sezze | 4,810.04 mi (7,741.02 km) |
| Duluth to Siano | 4,903.70 mi (7,891.75 km) |
| Duluth to Siena | 4,658.85 mi (7,497.69 km) |
| Duluth to Signa | 4,628.27 mi (7,448.48 km) |
| Duluth to Silea | 4,581.67 mi (7,373.48 km) |
| Duluth to Silvi Paese | 4,796.42 mi (7,719.09 km) |
| Duluth to Sinalunga | 4,678.28 mi (7,528.96 km) |
| Duluth to Siniscola | 4,729.65 mi (7,611.64 km) |
| Duluth to Sinnai | 4,771.84 mi (7,679.54 km) |
| Duluth to Siracusa | 5,113.16 mi (8,228.83 km) |
| Duluth to Solaro | 4,469.64 mi (7,193.19 km) |
| Duluth to Soliera | 4,576.63 mi (7,365.38 km) |
