| Bolsward to Silver Firs (Washington) | 4,818.43 mi (7,754.51 km) |
| Bolsward to Silver Spring (Maryland) | 3,848.23 mi (6,193.12 km) |
| Bolsward to Silver Springs Shores (Florida) | 4,540.12 mi (7,306.61 km) |
| Bolsward to Silverdale (Washington) | 4,842.68 mi (7,793.54 km) |
| Bolsward to Silverton (Oregon) | 5,004.56 mi (8,054.06 km) |
| Bolsward to Simi Valley (California) | 5,540.74 mi (8,916.96 km) |
| Bolsward to Simpsonville (South Carolina) | 4,261.58 mi (6,858.35 km) |
| Bolsward to Sioux City (Iowa) | 4,377.47 mi (7,044.86 km) |
| Bolsward to Sioux Falls (South Dakota) | 4,334.60 mi (6,975.87 km) |
| Bolsward to Skokie (Illinois) | 4,100.88 mi (6,599.73 km) |
| Bolsward to Sleepy Hollow (New York) | 3,627.93 mi (5,838.58 km) |
| Bolsward to Slidell (Louisiana) | 4,781.38 mi (7,694.89 km) |
| Bolsward to Smithfield (North Carolina) | 4,069.99 mi (6,550.01 km) |
| Bolsward to Smithfield (Utah) | 4,897.98 mi (7,882.54 km) |
| Bolsward to Smithville (Missouri) | 4,477.26 mi (7,205.46 km) |
