| Thornton to Superior (Colorado) | 4,530.14 mi (7,290.55 km) |
| Thornton to Superior (Wisconsin) | 3,742.16 mi (6,022.42 km) |
| Thornton to Surprise (Arizona) | 5,117.61 mi (8,236.00 km) |
| Thornton to Susanville (California) | 4,984.14 mi (8,021.20 km) |
| Thornton to Sussex (Wisconsin) | 3,774.17 mi (6,073.94 km) |
| Thornton to Suwanee (Georgia) | 4,062.56 mi (6,538.06 km) |
| Thornton to Swansea (Illinois) | 4,063.41 mi (6,539.43 km) |
| Thornton to Sweetwater (Florida) | 4,340.75 mi (6,985.76 km) |
| Thornton to Sweetwater (Texas) | 4,764.83 mi (7,668.26 km) |
| Thornton to Sycamore (Illinois) | 3,845.69 mi (6,189.04 km) |
| Thornton to Sylacauga (Alabama) | 4,192.49 mi (6,747.16 km) |
| Thornton to Sylvania (Ohio) | 3,674.39 mi (5,913.35 km) |
| Thornton to Syosset (New York) | 3,321.84 mi (5,345.98 km) |
| Thornton to Syracuse (New York) | 3,324.75 mi (5,350.67 km) |
| Thornton to Syracuse (Utah) | 4,690.82 mi (7,549.15 km) |
