| Summit to Superior (Colorado) | 1,614.67 mi (2,598.56 km) |
| Summit to Superior (Wisconsin) | 973.73 mi (1,567.07 km) |
| Summit to Surprise (Arizona) | 2,134.11 mi (3,434.51 km) |
| Summit to Susanville (California) | 2,398.62 mi (3,860.20 km) |
| Summit to Sussex (Wisconsin) | 730.80 mi (1,176.12 km) |
| Summit to Suwanee (Georgia) | 703.38 mi (1,131.97 km) |
| Summit to Swansea (Illinois) | 843.39 mi (1,357.31 km) |
| Summit to Sweetwater (Florida) | 1,088.19 mi (1,751.27 km) |
| Summit to Sweetwater (Texas) | 1,545.84 mi (2,487.78 km) |
| Summit to Sycamore (Illinois) | 746.90 mi (1,202.03 km) |
| Summit to Sylacauga (Alabama) | 836.93 mi (1,346.91 km) |
| Summit to Sylvania (Ohio) | 490.28 mi (789.03 km) |
| Summit to Syosset (New York) | 45.67 mi (73.51 km) |
| Summit to Syracuse (New York) | 184.89 mi (297.55 km) |
| Summit to Syracuse (Utah) | 1,953.69 mi (3,144.15 km) |
