| Alton to Security-Widefield (Colorado) | 4,712.56 mi (7,584.13 km) |
| Alton to Sedalia (Missouri) | 4,291.65 mi (6,906.75 km) |
| Alton to Sedro-Woolley (Washington) | 4,727.51 mi (7,608.20 km) |
| Alton to Seguin (Texas) | 4,936.61 mi (7,944.70 km) |
| Alton to Selden (New York) | 3,387.76 mi (5,452.07 km) |
| Alton to Selma (Alabama) | 4,353.27 mi (7,005.91 km) |
| Alton to Selma (California) | 5,329.83 mi (8,577.53 km) |
| Alton to Selma (Texas) | 4,950.36 mi (7,966.84 km) |
| Alton to Seminole (Florida) | 4,402.52 mi (7,085.17 km) |
| Alton to Seven Hills (Ohio) | 3,715.72 mi (5,979.87 km) |
| Alton to Seven Oaks (South Carolina) | 4,031.29 mi (6,487.74 km) |
| Alton to Severn (Maryland) | 3,613.40 mi (5,815.20 km) |
| Alton to Severna Park (Maryland) | 3,610.32 mi (5,810.24 km) |
| Alton to Sevierville (Tennessee) | 4,044.02 mi (6,508.22 km) |
| Alton to Seymour (Indiana) | 3,993.95 mi (6,427.63 km) |
