| Harstad to Silver Firs (Washington) | 4,103.74 mi (6,604.34 km) |
| Harstad to Silver Spring (Maryland) | 3,820.77 mi (6,148.94 km) |
| Harstad to Silver Springs Shores (Florida) | 4,560.81 mi (7,339.91 km) |
| Harstad to Silverdale (Washington) | 4,123.66 mi (6,636.39 km) |
| Harstad to Silverton (Oregon) | 4,302.11 mi (6,923.58 km) |
| Harstad to Simi Valley (California) | 4,960.01 mi (7,982.37 km) |
| Harstad to Simpsonville (South Carolina) | 4,210.80 mi (6,776.62 km) |
| Harstad to Sioux City (Iowa) | 4,026.01 mi (6,479.24 km) |
| Harstad to Sioux Falls (South Dakota) | 3,966.47 mi (6,383.41 km) |
| Harstad to Skokie (Illinois) | 3,874.82 mi (6,235.92 km) |
| Harstad to Sleepy Hollow (New York) | 3,617.05 mi (5,821.08 km) |
| Harstad to Slidell (Louisiana) | 4,664.80 mi (7,507.27 km) |
| Harstad to Smithfield (North Carolina) | 4,069.87 mi (6,549.82 km) |
| Harstad to Smithfield (Utah) | 4,350.13 mi (7,000.85 km) |
| Harstad to Smithville (Missouri) | 4,186.67 mi (6,737.80 km) |
