| Thornton to Security-Widefield (Colorado) | 4,578.74 mi (7,368.77 km) |
| Thornton to Sedalia (Missouri) | 4,175.64 mi (6,720.04 km) |
| Thornton to Sedro-Woolley (Washington) | 4,561.31 mi (7,340.71 km) |
| Thornton to Seguin (Texas) | 4,829.60 mi (7,772.50 km) |
| Thornton to Selden (New York) | 3,301.35 mi (5,313.02 km) |
| Thornton to Selma (Alabama) | 4,261.62 mi (6,858.42 km) |
| Thornton to Selma (California) | 5,178.23 mi (8,333.56 km) |
| Thornton to Selma (Texas) | 4,842.71 mi (7,793.60 km) |
| Thornton to Seminole (Florida) | 4,329.87 mi (6,968.26 km) |
| Thornton to Seven Hills (Ohio) | 3,612.75 mi (5,814.16 km) |
| Thornton to Seven Oaks (South Carolina) | 3,947.56 mi (6,352.98 km) |
| Thornton to Severn (Maryland) | 3,525.17 mi (5,673.22 km) |
| Thornton to Severna Park (Maryland) | 3,522.46 mi (5,668.85 km) |
| Thornton to Sevierville (Tennessee) | 3,951.15 mi (6,358.76 km) |
| Thornton to Seymour (Indiana) | 3,889.71 mi (6,259.88 km) |
