| Duffel to San Luis Obispo (California) | 5,606.69 mi (9,023.09 km) |
| Duffel to San Marcos (California) | 5,625.73 mi (9,053.74 km) |
| Duffel to San Marcos (Texas) | 5,135.21 mi (8,264.32 km) |
| Duffel to San Marino (California) | 5,597.28 mi (9,007.95 km) |
| Duffel to San Mateo (California) | 5,518.40 mi (8,881.00 km) |
| Duffel to San Pablo (California) | 5,494.85 mi (8,843.11 km) |
| Duffel to San Rafael (California) | 5,498.20 mi (8,848.50 km) |
| Duffel to San Ramon (California) | 5,495.40 mi (8,843.99 km) |
| Duffel to San Tan Valley (Arizona) | 5,442.12 mi (8,758.25 km) |
| Duffel to Sand Springs (Oklahoma) | 4,738.25 mi (7,625.48 km) |
| Duffel to Sandusky (Ohio) | 3,969.69 mi (6,388.60 km) |
| Duffel to Sandy (Oregon) | 5,053.33 mi (8,132.55 km) |
| Duffel to Sandy (Utah) | 5,035.77 mi (8,104.30 km) |
| Duffel to Sandy Springs (Georgia) | 4,394.52 mi (7,072.29 km) |
| Duffel to Sanford (Florida) | 4,523.53 mi (7,279.92 km) |
