| Kastamonu to Silver Firs (Washington) | 6,097.55 mi (9,813.05 km) |
| Kastamonu to Silver Spring (Maryland) | 5,385.03 mi (8,666.37 km) |
| Kastamonu to Silver Springs Shores (Florida) | 6,074.44 mi (9,775.87 km) |
| Kastamonu to Silverdale (Washington) | 6,118.03 mi (9,846.02 km) |
| Kastamonu to Silverton (Oregon) | 6,295.02 mi (10,130.86 km) |
| Kastamonu to Simi Valley (California) | 6,926.93 mi (11,147.82 km) |
| Kastamonu to Simpsonville (South Carolina) | 5,798.39 mi (9,331.60 km) |
| Kastamonu to Sioux City (Iowa) | 5,862.97 mi (9,435.54 km) |
| Kastamonu to Sioux Falls (South Dakota) | 5,813.85 mi (9,356.49 km) |
| Kastamonu to Skokie (Illinois) | 5,617.26 mi (9,040.11 km) |
| Kastamonu to Sleepy Hollow (New York) | 5,164.77 mi (8,311.90 km) |
| Kastamonu to Slidell (Louisiana) | 6,316.61 mi (10,165.59 km) |
| Kastamonu to Smithfield (North Carolina) | 5,606.64 mi (9,023.01 km) |
| Kastamonu to Smithfield (Utah) | 6,299.35 mi (10,137.82 km) |
| Kastamonu to Smithville (Missouri) | 5,982.07 mi (9,627.21 km) |
