| Potomac to Shelton (Connecticut) | 266.31 mi (428.58 km) |
| Potomac to Shelton (Washington) | 2,348.24 mi (3,779.12 km) |
| Potomac to Shenandoah (Louisiana) | 982.52 mi (1,581.22 km) |
| Potomac to Shepherdsville (Kentucky) | 465.30 mi (748.83 km) |
| Potomac to Sheridan (Wyoming) | 1,572.43 mi (2,530.58 km) |
| Potomac to Sherman (Texas) | 1,141.06 mi (1,836.37 km) |
| Potomac to Sherrelwood (Colorado) | 1,479.18 mi (2,380.52 km) |
| Potomac to Sherwood (Arkansas) | 876.13 mi (1,410.00 km) |
| Potomac to Sherwood (Oregon) | 2,345.38 mi (3,774.52 km) |
| Potomac to Shiloh (Illinois) | 685.37 mi (1,102.99 km) |
| Potomac to Shiloh (Ohio) | 379.61 mi (610.92 km) |
| Potomac to Shiloh (Pennsylvania) | 69.65 mi (112.09 km) |
| Potomac to Shirley (New York) | 259.83 mi (418.15 km) |
| Potomac to Shively (Kentucky) | 468.62 mi (754.17 km) |
| Potomac to Shoreline (Washington) | 2,310.72 mi (3,718.75 km) |
