| Delaware to Security-Widefield (Colorado) | 1,155.42 mi (1,859.47 km) |
| Delaware to Sedalia (Missouri) | 552.25 mi (888.76 km) |
| Delaware to Sedro-Woolley (Washington) | 1,990.67 mi (3,203.67 km) |
| Delaware to Seguin (Texas) | 1,118.65 mi (1,800.29 km) |
| Delaware to Selden (New York) | 527.49 mi (848.91 km) |
| Delaware to Selma (Alabama) | 586.44 mi (943.78 km) |
| Delaware to Selma (California) | 1,980.24 mi (3,186.88 km) |
| Delaware to Selma (Texas) | 1,133.44 mi (1,824.10 km) |
| Delaware to Seminole (Florida) | 859.79 mi (1,383.70 km) |
| Delaware to Seven Hills (Ohio) | 105.29 mi (169.45 km) |
| Delaware to Seven Oaks (South Carolina) | 443.86 mi (714.32 km) |
| Delaware to Severn (Maryland) | 348.13 mi (560.26 km) |
| Delaware to Severna Park (Maryland) | 355.57 mi (572.24 km) |
| Delaware to Sevierville (Tennessee) | 305.05 mi (490.93 km) |
| Delaware to Seymour (Indiana) | 176.11 mi (283.42 km) |
