| Norristown to Silver Firs (Washington) | 2,349.51 mi (3,781.17 km) |
| Norristown to Silver Spring (Maryland) | 118.32 mi (190.42 km) |
| Norristown to Silver Springs Shores (Florida) | 849.48 mi (1,367.10 km) |
| Norristown to Silverdale (Washington) | 2,375.33 mi (3,822.73 km) |
| Norristown to Silverton (Oregon) | 2,402.81 mi (3,866.95 km) |
| Norristown to Simi Valley (California) | 2,399.08 mi (3,860.95 km) |
| Norristown to Simpsonville (South Carolina) | 531.58 mi (855.50 km) |
| Norristown to Sioux City (Iowa) | 1,101.83 mi (1,773.22 km) |
| Norristown to Sioux Falls (South Dakota) | 1,122.95 mi (1,807.22 km) |
| Norristown to Skokie (Illinois) | 658.60 mi (1,059.91 km) |
| Norristown to Sleepy Hollow (New York) | 102.12 mi (164.34 km) |
| Norristown to Slidell (Louisiana) | 1,058.89 mi (1,704.12 km) |
| Norristown to Smithfield (North Carolina) | 358.28 mi (576.59 km) |
| Norristown to Smithfield (Utah) | 1,892.57 mi (3,045.80 km) |
| Norristown to Smithville (Missouri) | 1,020.94 mi (1,643.04 km) |
