| Maryland Heights to Smyrna (Delaware) | 798.29 mi (1,284.72 km) |
| Maryland Heights to Smyrna (Georgia) | 471.64 mi (759.03 km) |
| Maryland Heights to Smyrna (Tennessee) | 288.30 mi (463.98 km) |
| Maryland Heights to Snellville (Georgia) | 492.46 mi (792.54 km) |
| Maryland Heights to Snoqualmie (Washington) | 1,680.83 mi (2,705.03 km) |
| Maryland Heights to Snyder (Texas) | 716.83 mi (1,153.62 km) |
| Maryland Heights to Socastee (South Carolina) | 726.91 mi (1,169.84 km) |
| Maryland Heights to Socorro (Texas) | 1,014.81 mi (1,633.17 km) |
| Maryland Heights to Soddy-Daisy (Tennessee) | 377.77 mi (607.96 km) |
| Maryland Heights to Solana Beach (California) | 1,544.93 mi (2,486.32 km) |
| Maryland Heights to Soledad (California) | 1,689.48 mi (2,718.95 km) |
| Maryland Heights to Solon (Ohio) | 511.83 mi (823.72 km) |
| Maryland Heights to Somers Point (New Jersey) | 851.75 mi (1,370.76 km) |
| Maryland Heights to Somerset (Kentucky) | 339.01 mi (545.58 km) |
| Maryland Heights to Somerset (New Jersey) | 857.97 mi (1,380.76 km) |
