| Potomac to St. George (Utah) | 1,970.95 mi (3,171.93 km) |
| Potomac to St. Helens (Oregon) | 2,340.90 mi (3,767.31 km) |
| Potomac to St. James (New York) | 249.76 mi (401.94 km) |
| Potomac to St. John (Indiana) | 567.01 mi (912.51 km) |
| Potomac to St. Joseph (Missouri) | 941.17 mi (1,514.66 km) |
| Potomac to St. Louis (Missouri) | 702.38 mi (1,130.38 km) |
| Potomac to St. Louis Park (Minnesota) | 924.00 mi (1,487.03 km) |
| Potomac to St. Marys (Georgia) | 621.93 mi (1,000.90 km) |
| Potomac to St. Marys (Pennsylvania) | 183.01 mi (294.52 km) |
| Potomac to St. Matthews (Kentucky) | 458.64 mi (738.11 km) |
| Potomac to St. Michael (Minnesota) | 945.13 mi (1,521.04 km) |
| Potomac to St. Paul (Minnesota) | 912.05 mi (1,467.80 km) |
| Potomac to St. Peter (Minnesota) | 938.04 mi (1,509.63 km) |
| Potomac to St. Peters (Missouri) | 720.71 mi (1,159.88 km) |
| Potomac to St. Petersburg (Florida) | 836.60 mi (1,346.38 km) |
