| Hereford to Silver Firs (Washington) | 4,666.42 mi (7,509.88 km) |
| Hereford to Silver Spring (Maryland) | 3,542.74 mi (5,701.50 km) |
| Hereford to Silver Springs Shores (Florida) | 4,220.92 mi (6,792.91 km) |
| Hereford to Silverdale (Washington) | 4,691.84 mi (7,550.79 km) |
| Hereford to Silverton (Oregon) | 4,845.67 mi (7,798.34 km) |
| Hereford to Simi Valley (California) | 5,336.26 mi (8,587.88 km) |
| Hereford to Simpsonville (South Carolina) | 3,955.45 mi (6,365.69 km) |
| Hereford to Sioux City (Iowa) | 4,128.74 mi (6,644.56 km) |
| Hereford to Sioux Falls (South Dakota) | 4,090.38 mi (6,582.83 km) |
| Hereford to Skokie (Illinois) | 3,828.63 mi (6,161.58 km) |
| Hereford to Sleepy Hollow (New York) | 3,322.38 mi (5,346.85 km) |
| Hereford to Slidell (Louisiana) | 4,481.04 mi (7,211.54 km) |
| Hereford to Smithfield (North Carolina) | 3,757.88 mi (6,047.72 km) |
| Hereford to Smithfield (Utah) | 4,692.38 mi (7,551.65 km) |
| Hereford to Smithville (Missouri) | 4,213.57 mi (6,781.09 km) |
