| Duffel to Southern Pines (North Carolina) | 4,132.45 mi (6,650.54 km) |
| Duffel to Southfield (Michigan) | 3,943.68 mi (6,346.75 km) |
| Duffel to Southgate (Michigan) | 3,954.08 mi (6,363.48 km) |
| Duffel to Southlake (Texas) | 4,942.33 mi (7,953.92 km) |
| Duffel to Spanaway (Washington) | 4,957.43 mi (7,978.21 km) |
| Duffel to Spanish Fork (Utah) | 5,054.99 mi (8,135.23 km) |
| Duffel to Spanish Lake (Missouri) | 4,382.93 mi (7,053.65 km) |
| Duffel to Spanish Springs (Nevada) | 5,319.91 mi (8,561.56 km) |
| Duffel to Sparks (Nevada) | 5,326.10 mi (8,571.52 km) |
| Duffel to Spartanburg (South Carolina) | 4,246.77 mi (6,834.51 km) |
| Duffel to Spearfish (South Dakota) | 4,569.87 mi (7,354.50 km) |
| Duffel to Speedway (Indiana) | 4,183.64 mi (6,732.92 km) |
| Duffel to Spencer (Iowa) | 4,347.25 mi (6,996.22 km) |
| Duffel to Spokane (Washington) | 4,796.40 mi (7,719.07 km) |
| Duffel to Spokane Valley (Washington) | 4,791.40 mi (7,711.01 km) |
