| Potomac to Savignano sul Rubicone | 4,405.94 mi (7,090.67 km) |
| Potomac to Savona | 4,228.97 mi (6,805.87 km) |
| Potomac to Scafati | 4,618.25 mi (7,432.36 km) |
| Potomac to Scalea | 4,709.80 mi (7,579.69 km) |
| Potomac to Scandiano | 4,315.41 mi (6,944.98 km) |
| Potomac to Scandicci | 4,365.35 mi (7,025.36 km) |
| Potomac to Schio | 4,306.70 mi (6,930.97 km) |
| Potomac to Sciacca | 4,674.19 mi (7,522.39 km) |
| Potomac to Scicli | 4,775.69 mi (7,685.73 km) |
| Potomac to Scordia | 4,762.94 mi (7,665.21 km) |
| Potomac to Scorze | 4,343.20 mi (6,989.71 km) |
| Potomac to Sedico | 4,324.54 mi (6,959.68 km) |
| Potomac to Sedriano | 4,212.27 mi (6,779.00 km) |
| Potomac to Segni | 4,517.76 mi (7,270.64 km) |
| Potomac to Segrate | 4,226.16 mi (6,801.35 km) |
