| Duluth to Security-Widefield (Colorado) | 843.41 mi (1,357.33 km) |
| Duluth to Sedalia (Missouri) | 560.31 mi (901.73 km) |
| Duluth to Sedro-Woolley (Washington) | 1,396.88 mi (2,248.06 km) |
| Duluth to Seguin (Texas) | 1,228.05 mi (1,976.35 km) |
| Duluth to Selden (New York) | 1,032.09 mi (1,660.98 km) |
| Duluth to Selma (Alabama) | 1,028.09 mi (1,654.55 km) |
| Duluth to Selma (California) | 1,572.42 mi (2,530.56 km) |
| Duluth to Selma (Texas) | 1,233.07 mi (1,984.44 km) |
| Duluth to Seminole (Florida) | 1,403.05 mi (2,257.99 km) |
| Duluth to Seven Hills (Ohio) | 638.51 mi (1,027.59 km) |
| Duluth to Seven Oaks (South Carolina) | 1,050.33 mi (1,690.35 km) |
| Duluth to Severn (Maryland) | 939.99 mi (1,512.77 km) |
| Duluth to Severna Park (Maryland) | 947.38 mi (1,524.66 km) |
| Duluth to Sevierville (Tennessee) | 872.70 mi (1,404.47 km) |
| Duluth to Seymour (Indiana) | 626.15 mi (1,007.69 km) |
