| Boppard to Superior (Colorado) | 4,996.79 mi (8,041.55 km) |
| Boppard to Superior (Wisconsin) | 4,211.05 mi (6,777.03 km) |
| Boppard to Surprise (Arizona) | 5,583.17 mi (8,985.25 km) |
| Boppard to Susanville (California) | 5,432.63 mi (8,742.98 km) |
| Boppard to Sussex (Wisconsin) | 4,244.35 mi (6,830.62 km) |
| Boppard to Suwanee (Georgia) | 4,524.14 mi (7,280.90 km) |
| Boppard to Swansea (Illinois) | 4,532.73 mi (7,294.72 km) |
| Boppard to Sweetwater (Florida) | 4,782.94 mi (7,697.39 km) |
| Boppard to Sweetwater (Texas) | 5,235.00 mi (8,424.92 km) |
| Boppard to Sycamore (Illinois) | 4,315.74 mi (6,945.52 km) |
| Boppard to Sylacauga (Alabama) | 4,655.29 mi (7,491.97 km) |
| Boppard to Sylvania (Ohio) | 4,142.92 mi (6,667.39 km) |
| Boppard to Syosset (New York) | 3,781.82 mi (6,086.24 km) |
| Boppard to Syracuse (New York) | 3,790.20 mi (6,099.73 km) |
| Boppard to Syracuse (Utah) | 5,150.31 mi (8,288.63 km) |
