| Kirkwall to Silver Firs (Washington) | 4,295.34 mi (6,912.69 km) |
| Kirkwall to Silver Spring (Maryland) | 3,420.72 mi (5,505.11 km) |
| Kirkwall to Silver Springs Shores (Florida) | 4,134.46 mi (6,653.77 km) |
| Kirkwall to Silverdale (Washington) | 4,319.63 mi (6,951.78 km) |
| Kirkwall to Silverton (Oregon) | 4,481.43 mi (7,212.16 km) |
| Kirkwall to Simi Valley (California) | 5,023.63 mi (8,084.76 km) |
| Kirkwall to Simpsonville (South Carolina) | 3,832.40 mi (6,167.66 km) |
| Kirkwall to Sioux City (Iowa) | 3,883.50 mi (6,249.89 km) |
| Kirkwall to Sioux Falls (South Dakota) | 3,837.70 mi (6,176.17 km) |
| Kirkwall to Skokie (Illinois) | 3,627.88 mi (5,838.51 km) |
| Kirkwall to Sleepy Hollow (New York) | 3,202.22 mi (5,153.47 km) |
| Kirkwall to Slidell (Louisiana) | 4,339.96 mi (6,984.49 km) |
| Kirkwall to Smithfield (North Carolina) | 3,652.94 mi (5,878.84 km) |
| Kirkwall to Smithfield (Utah) | 4,381.89 mi (7,051.97 km) |
| Kirkwall to Smithville (Missouri) | 3,994.67 mi (6,428.80 km) |
