| Potomac to Savannah (Georgia) | 532.05 mi (856.25 km) |
| Potomac to Sayreville (New Jersey) | 182.52 mi (293.73 km) |
| Potomac to Sayville (New York) | 248.64 mi (400.15 km) |
| Potomac to Scaggsville (Maryland) | 18.82 mi (30.28 km) |
| Potomac to Scarsdale (New York) | 226.57 mi (364.63 km) |
| Potomac to Schaumburg (Illinois) | 608.19 mi (978.78 km) |
| Potomac to Schenectady (New York) | 312.37 mi (502.71 km) |
| Potomac to Schererville (Indiana) | 566.45 mi (911.61 km) |
| Potomac to Schertz (Texas) | 1,363.22 mi (2,193.89 km) |
| Potomac to Schiller Park (Illinois) | 596.21 mi (959.51 km) |
| Potomac to Schofield Barracks (Hawaii) | 4,822.29 mi (7,760.72 km) |
| Potomac to Scotchtown (New York) | 226.21 mi (364.04 km) |
| Potomac to Scottdale (Georgia) | 533.12 mi (857.98 km) |
| Potomac to Scotts Valley (California) | 2,417.98 mi (3,891.37 km) |
| Potomac to Scottsbluff (Nebraska) | 1,400.02 mi (2,253.11 km) |
