| Potomac to Sheldon | 3,579.91 mi (5,761.31 km) |
| Potomac to Shenfield | 3,681.68 mi (5,925.09 km) |
| Potomac to Shenley Brook End | 3,628.50 mi (5,839.51 km) |
| Potomac to Shenley Church End | 3,628.27 mi (5,839.13 km) |
| Potomac to Shepperton | 3,655.24 mi (5,882.55 km) |
| Potomac to Shepshed | 3,592.37 mi (5,781.36 km) |
| Potomac to Shepton Mallet | 3,573.69 mi (5,751.30 km) |
| Potomac to Sherborne | 3,579.99 mi (5,761.44 km) |
| Potomac to Shevington | 3,521.45 mi (5,667.22 km) |
| Potomac to Shildon | 3,542.68 mi (5,701.39 km) |
| Potomac to Shipley | 3,552.54 mi (5,717.26 km) |
| Potomac to Shirebrook | 3,586.69 mi (5,772.21 km) |
| Potomac to Shiremoor | 3,540.88 mi (5,698.50 km) |
| Potomac to Shirley | 3,672.01 mi (5,909.53 km) |
| Potomac to Shoeburyness | 3,703.31 mi (5,959.91 km) |
