| Potomac to Sucha Beskidzka | 4,497.74 mi (7,238.42 km) |
| Potomac to Suchanino | 4,300.13 mi (6,920.38 km) |
| Potomac to Sulechow | 4,267.01 mi (6,867.09 km) |
| Potomac to Sulecin | 4,236.42 mi (6,817.86 km) |
| Potomac to Sulejowek | 4,469.28 mi (7,192.60 km) |
| Potomac to Suwalki | 4,459.44 mi (7,176.78 km) |
| Potomac to Swarzedz | 4,310.26 mi (6,936.70 km) |
| Potomac to Swidnica | 4,340.75 mi (6,985.76 km) |
| Potomac to Swidnik | 4,558.63 mi (7,336.41 km) |
| Potomac to Swidwin | 4,217.59 mi (6,787.56 km) |
| Potomac to Swiebodzice | 4,334.48 mi (6,975.67 km) |
| Potomac to Swiecie | 4,325.77 mi (6,961.65 km) |
| Potomac to Swiedbodzin | 4,258.45 mi (6,853.32 km) |
| Potomac to Swietochlowice | 4,452.46 mi (7,165.55 km) |
| Potomac to Swinoujscie | 4,158.33 mi (6,692.18 km) |
