| Potomac to Scottsboro (Alabama) | 574.90 mi (925.21 km) |
| Potomac to Scottsdale (Arizona) | 1,951.96 mi (3,141.38 km) |
| Potomac to Scranton (Pennsylvania) | 183.81 mi (295.81 km) |
| Potomac to Seabrook (Maryland) | 18.63 mi (29.97 km) |
| Potomac to Seabrook (Texas) | 1,205.31 mi (1,939.77 km) |
| Potomac to Seaford (New York) | 227.19 mi (365.63 km) |
| Potomac to Seagoville (Texas) | 1,166.71 mi (1,877.64 km) |
| Potomac to Seal Beach (California) | 2,283.23 mi (3,674.51 km) |
| Potomac to Searcy (Arkansas) | 841.23 mi (1,353.83 km) |
| Potomac to Seaside (California) | 2,416.88 mi (3,889.60 km) |
| Potomac to SeaTac (Washington) | 2,309.44 mi (3,716.69 km) |
| Potomac to Seattle (Washington) | 2,310.19 mi (3,717.89 km) |
| Potomac to Sebastian (Florida) | 798.72 mi (1,285.41 km) |
| Potomac to Sebring (Florida) | 833.97 mi (1,342.15 km) |
| Potomac to Secaucus (New Jersey) | 205.90 mi (331.36 km) |
