| Pembroke Dock to Silver Firs (Washington) | 4,624.75 mi (7,442.82 km) |
| Pembroke Dock to Silver Spring (Maryland) | 3,458.13 mi (5,565.31 km) |
| Pembroke Dock to Silver Springs Shores (Florida) | 4,132.02 mi (6,649.84 km) |
| Pembroke Dock to Silverdale (Washington) | 4,650.46 mi (7,484.20 km) |
| Pembroke Dock to Silverton (Oregon) | 4,801.81 mi (7,727.77 km) |
| Pembroke Dock to Simi Valley (California) | 5,279.04 mi (8,495.79 km) |
| Pembroke Dock to Simpsonville (South Carolina) | 3,870.42 mi (6,228.84 km) |
| Pembroke Dock to Sioux City (Iowa) | 4,060.14 mi (6,534.16 km) |
| Pembroke Dock to Sioux Falls (South Dakota) | 4,023.13 mi (6,474.60 km) |
| Pembroke Dock to Skokie (Illinois) | 3,753.51 mi (6,040.68 km) |
| Pembroke Dock to Sleepy Hollow (New York) | 3,237.88 mi (5,210.86 km) |
| Pembroke Dock to Slidell (Louisiana) | 4,397.41 mi (7,076.95 km) |
| Pembroke Dock to Smithfield (North Carolina) | 3,671.21 mi (5,908.24 km) |
| Pembroke Dock to Smithfield (Utah) | 4,635.51 mi (7,460.13 km) |
| Pembroke Dock to Smithville (Missouri) | 4,140.60 mi (6,663.66 km) |
