| Birkenhead to Silver Firs (Washington) | 4,587.20 mi (7,382.38 km) |
| Birkenhead to Silver Spring (Maryland) | 3,505.51 mi (5,641.58 km) |
| Birkenhead to Silver Springs Shores (Florida) | 4,191.35 mi (6,745.32 km) |
| Birkenhead to Silverdale (Washington) | 4,612.45 mi (7,423.02 km) |
| Birkenhead to Silverton (Oregon) | 4,767.63 mi (7,672.76 km) |
| Birkenhead to Simi Valley (California) | 5,267.12 mi (8,476.61 km) |
| Birkenhead to Simpsonville (South Carolina) | 3,918.69 mi (6,306.52 km) |
| Birkenhead to Sioux City (Iowa) | 4,070.25 mi (6,550.44 km) |
| Birkenhead to Sioux Falls (South Dakota) | 4,030.56 mi (6,486.56 km) |
| Birkenhead to Skokie (Illinois) | 3,777.61 mi (6,079.48 km) |
| Birkenhead to Sleepy Hollow (New York) | 3,285.09 mi (5,286.84 km) |
| Birkenhead to Slidell (Louisiana) | 4,441.67 mi (7,148.17 km) |
| Birkenhead to Smithfield (North Carolina) | 3,724.16 mi (5,993.46 km) |
| Birkenhead to Smithfield (Utah) | 4,623.17 mi (7,440.27 km) |
| Birkenhead to Smithville (Missouri) | 4,159.81 mi (6,694.57 km) |
