| Delaware to Smyrna (Delaware) | 402.12 mi (647.15 km) |
| Delaware to Smyrna (Georgia) | 450.75 mi (725.42 km) |
| Delaware to Smyrna (Tennessee) | 352.28 mi (566.94 km) |
| Delaware to Snellville (Georgia) | 447.13 mi (719.59 km) |
| Delaware to Snoqualmie (Washington) | 1,971.42 mi (3,172.69 km) |
| Delaware to Snyder (Texas) | 1,117.42 mi (1,798.32 km) |
| Delaware to Socastee (South Carolina) | 507.95 mi (817.46 km) |
| Delaware to Socorro (Texas) | 1,421.99 mi (2,288.47 km) |
| Delaware to Soddy-Daisy (Tennessee) | 365.81 mi (588.71 km) |
| Delaware to Solana Beach (California) | 1,947.76 mi (3,134.61 km) |
| Delaware to Soledad (California) | 2,073.89 mi (3,337.61 km) |
| Delaware to Solon (Ohio) | 114.40 mi (184.11 km) |
| Delaware to Somers Point (New Jersey) | 454.25 mi (731.04 km) |
| Delaware to Somerset (Kentucky) | 236.22 mi (380.16 km) |
| Delaware to Somerset (New Jersey) | 451.20 mi (726.14 km) |
