| Drogheda to Silver Firs (Washington) | 4,480.81 mi (7,211.17 km) |
| Drogheda to Silver Spring (Maryland) | 3,367.17 mi (5,418.94 km) |
| Drogheda to Silver Springs Shores (Florida) | 4,052.54 mi (6,521.93 km) |
| Drogheda to Silverdale (Washington) | 4,506.37 mi (7,252.30 km) |
| Drogheda to Silverton (Oregon) | 4,659.11 mi (7,498.12 km) |
| Drogheda to Simi Valley (California) | 5,146.34 mi (8,282.23 km) |
| Drogheda to Simpsonville (South Carolina) | 3,780.31 mi (6,083.82 km) |
| Drogheda to Sioux City (Iowa) | 3,940.14 mi (6,341.04 km) |
| Drogheda to Sioux Falls (South Dakota) | 3,901.38 mi (6,278.67 km) |
| Drogheda to Skokie (Illinois) | 3,643.28 mi (5,863.29 km) |
| Drogheda to Sleepy Hollow (New York) | 3,146.75 mi (5,064.20 km) |
| Drogheda to Slidell (Louisiana) | 4,303.71 mi (6,926.16 km) |
| Drogheda to Smithfield (North Carolina) | 3,585.47 mi (5,770.26 km) |
| Drogheda to Smithfield (Utah) | 4,502.47 mi (7,246.03 km) |
| Drogheda to Smithville (Missouri) | 4,026.86 mi (6,480.61 km) |
