| Irving to Silver Firs (Washington) | 1,669.82 mi (2,687.31 km) |
| Irving to Silver Spring (Maryland) | 1,191.01 mi (1,916.74 km) |
| Irving to Silver Springs Shores (Florida) | 921.93 mi (1,483.70 km) |
| Irving to Silverdale (Washington) | 1,685.03 mi (2,711.79 km) |
| Irving to Silverton (Oregon) | 1,610.68 mi (2,592.14 km) |
| Irving to Simi Valley (California) | 1,255.27 mi (2,020.17 km) |
| Irving to Simpsonville (South Carolina) | 853.86 mi (1,374.16 km) |
| Irving to Sioux City (Iowa) | 666.64 mi (1,072.86 km) |
| Irving to Sioux Falls (South Dakota) | 738.12 mi (1,187.89 km) |
| Irving to Skokie (Illinois) | 810.39 mi (1,304.20 km) |
| Irving to Sleepy Hollow (New York) | 1,390.57 mi (2,237.90 km) |
| Irving to Slidell (Louisiana) | 458.69 mi (738.19 km) |
| Irving to Smithfield (North Carolina) | 1,078.27 mi (1,735.32 km) |
| Irving to Smithfield (Utah) | 1,022.47 mi (1,645.51 km) |
| Irving to Smithville (Missouri) | 470.75 mi (757.60 km) |
