| Boppard to Southern Pines (North Carolina) | 4,279.65 mi (6,887.43 km) |
| Boppard to Southfield (Michigan) | 4,090.34 mi (6,582.76 km) |
| Boppard to Southgate (Michigan) | 4,100.80 mi (6,599.61 km) |
| Boppard to Southlake (Texas) | 5,088.59 mi (8,189.30 km) |
| Boppard to Spanaway (Washington) | 5,082.37 mi (8,179.28 km) |
| Boppard to Spanish Fork (Utah) | 5,192.38 mi (8,356.32 km) |
| Boppard to Spanish Lake (Missouri) | 4,529.27 mi (7,289.16 km) |
| Boppard to Spanish Springs (Nevada) | 5,452.09 mi (8,774.30 km) |
| Boppard to Sparks (Nevada) | 5,458.30 mi (8,784.28 km) |
| Boppard to Spartanburg (South Carolina) | 4,394.10 mi (7,071.63 km) |
| Boppard to Spearfish (South Dakota) | 4,709.02 mi (7,578.43 km) |
| Boppard to Speedway (Indiana) | 4,330.42 mi (6,969.14 km) |
| Boppard to Spencer (Iowa) | 4,490.76 mi (7,227.18 km) |
| Boppard to Spokane (Washington) | 4,924.86 mi (7,925.79 km) |
| Boppard to Spokane Valley (Washington) | 4,920.00 mi (7,917.98 km) |
