| Knokke-Heist to Smyrna (Delaware) | 3,731.74 mi (6,005.66 km) |
| Knokke-Heist to Smyrna (Georgia) | 4,348.41 mi (6,998.08 km) |
| Knokke-Heist to Smyrna (Tennessee) | 4,324.82 mi (6,960.13 km) |
| Knokke-Heist to Snellville (Georgia) | 4,328.10 mi (6,965.40 km) |
| Knokke-Heist to Snoqualmie (Washington) | 4,873.23 mi (7,842.70 km) |
| Knokke-Heist to Snyder (Texas) | 5,040.81 mi (8,112.39 km) |
| Knokke-Heist to Socastee (South Carolina) | 4,132.76 mi (6,651.04 km) |
| Knokke-Heist to Socorro (Texas) | 5,292.85 mi (8,518.02 km) |
| Knokke-Heist to Soddy-Daisy (Tennessee) | 4,306.21 mi (6,930.17 km) |
| Knokke-Heist to Solana Beach (California) | 5,586.40 mi (8,990.44 km) |
| Knokke-Heist to Soledad (California) | 5,508.77 mi (8,865.50 km) |
| Knokke-Heist to Solon (Ohio) | 3,868.52 mi (6,225.78 km) |
| Knokke-Heist to Somers Point (New Jersey) | 3,690.04 mi (5,938.55 km) |
| Knokke-Heist to Somerset (Kentucky) | 4,195.09 mi (6,751.35 km) |
| Knokke-Heist to Somerset (New Jersey) | 3,632.72 mi (5,846.29 km) |
