| Delaware to Superior (Colorado) | 1,164.26 mi (1,873.69 km) |
| Delaware to Superior (Wisconsin) | 631.67 mi (1,016.57 km) |
| Delaware to Surprise (Arizona) | 1,675.75 mi (2,696.86 km) |
| Delaware to Susanville (California) | 1,961.44 mi (3,156.64 km) |
| Delaware to Sussex (Wisconsin) | 330.47 mi (531.85 km) |
| Delaware to Suwanee (Georgia) | 434.21 mi (698.79 km) |
| Delaware to Swansea (Illinois) | 387.77 mi (624.06 km) |
| Delaware to Sweetwater (Florida) | 1,014.27 mi (1,632.32 km) |
| Delaware to Sweetwater (Texas) | 1,102.39 mi (1,774.13 km) |
| Delaware to Sycamore (Illinois) | 314.75 mi (506.55 km) |
| Delaware to Sylacauga (Alabama) | 521.69 mi (839.57 km) |
| Delaware to Sylvania (Ohio) | 103.87 mi (167.16 km) |
| Delaware to Syosset (New York) | 503.61 mi (810.49 km) |
| Delaware to Syracuse (New York) | 405.05 mi (651.87 km) |
| Delaware to Syracuse (Utah) | 1,513.17 mi (2,435.22 km) |
