| Greenock to Silver Firs (Washington) | 4,407.62 mi (7,093.38 km) |
| Greenock to Silver Spring (Maryland) | 3,396.02 mi (5,465.36 km) |
| Greenock to Silver Springs Shores (Florida) | 4,094.79 mi (6,589.93 km) |
| Greenock to Silverdale (Washington) | 4,432.65 mi (7,133.66 km) |
| Greenock to Silverton (Oregon) | 4,589.55 mi (7,386.16 km) |
| Greenock to Simi Valley (California) | 5,101.46 mi (8,210.01 km) |
| Greenock to Simpsonville (South Carolina) | 3,809.29 mi (6,130.46 km) |
| Greenock to Sioux City (Iowa) | 3,922.39 mi (6,312.48 km) |
| Greenock to Sioux Falls (South Dakota) | 3,880.52 mi (6,245.09 km) |
| Greenock to Skokie (Illinois) | 3,642.87 mi (5,862.64 km) |
| Greenock to Sleepy Hollow (New York) | 3,175.96 mi (5,111.21 km) |
| Greenock to Slidell (Louisiana) | 4,326.69 mi (6,963.14 km) |
| Greenock to Smithfield (North Carolina) | 3,620.73 mi (5,827.01 km) |
| Greenock to Smithfield (Utah) | 4,457.74 mi (7,174.04 km) |
| Greenock to Smithville (Missouri) | 4,019.85 mi (6,469.32 km) |
