| Dumas to Silver Firs (Washington) | 1,322.15 mi (2,127.80 km) |
| Dumas to Silver Spring (Maryland) | 1,381.18 mi (2,222.80 km) |
| Dumas to Silver Springs Shores (Florida) | 1,249.71 mi (2,011.22 km) |
| Dumas to Silverdale (Washington) | 1,336.47 mi (2,150.84 km) |
| Dumas to Silverton (Oregon) | 1,258.51 mi (2,025.38 km) |
| Dumas to Simi Valley (California) | 954.42 mi (1,536.00 km) |
| Dumas to Simpsonville (South Carolina) | 1,112.22 mi (1,789.95 km) |
| Dumas to Sioux City (Iowa) | 546.75 mi (879.92 km) |
| Dumas to Sioux Falls (South Dakota) | 598.72 mi (963.54 km) |
| Dumas to Skokie (Illinois) | 873.70 mi (1,406.08 km) |
| Dumas to Sleepy Hollow (New York) | 1,554.60 mi (2,501.89 km) |
| Dumas to Slidell (Louisiana) | 802.62 mi (1,291.69 km) |
| Dumas to Smithfield (North Carolina) | 1,322.21 mi (2,127.89 km) |
| Dumas to Smithfield (Utah) | 671.54 mi (1,080.74 km) |
| Dumas to Smithville (Missouri) | 472.01 mi (759.63 km) |
