| Gloucester to Silver Firs (Washington) | 4,689.36 mi (7,546.79 km) |
| Gloucester to Silver Spring (Maryland) | 3,565.78 mi (5,738.57 km) |
| Gloucester to Silver Springs Shores (Florida) | 4,243.23 mi (6,828.82 km) |
| Gloucester to Silverdale (Washington) | 4,714.75 mi (7,587.65 km) |
| Gloucester to Silverton (Oregon) | 4,868.76 mi (7,835.52 km) |
| Gloucester to Simi Valley (California) | 5,360.12 mi (8,626.28 km) |
| Gloucester to Simpsonville (South Carolina) | 3,978.44 mi (6,402.67 km) |
| Gloucester to Sioux City (Iowa) | 4,152.78 mi (6,683.25 km) |
| Gloucester to Sioux Falls (South Dakota) | 4,114.43 mi (6,621.54 km) |
| Gloucester to Skokie (Illinois) | 3,852.49 mi (6,199.98 km) |
| Gloucester to Sleepy Hollow (New York) | 3,345.43 mi (5,383.94 km) |
| Gloucester to Slidell (Louisiana) | 4,504.22 mi (7,248.84 km) |
| Gloucester to Smithfield (North Carolina) | 3,780.61 mi (6,084.30 km) |
| Gloucester to Smithfield (Utah) | 4,716.23 mi (7,590.04 km) |
| Gloucester to Smithville (Missouri) | 4,237.52 mi (6,819.63 km) |
