| Irun to Silver Firs (Washington) | 5,167.78 mi (8,316.73 km) |
| Irun to Silver Spring (Maryland) | 3,788.39 mi (6,096.82 km) |
| Irun to Silver Springs Shores (Florida) | 4,406.97 mi (7,092.33 km) |
| Irun to Silverdale (Washington) | 5,194.20 mi (8,359.25 km) |
| Irun to Silverton (Oregon) | 5,338.23 mi (8,591.05 km) |
| Irun to Simi Valley (California) | 5,766.51 mi (9,280.30 km) |
| Irun to Simpsonville (South Carolina) | 4,191.32 mi (6,745.28 km) |
| Irun to Sioux City (Iowa) | 4,499.88 mi (7,241.85 km) |
| Irun to Sioux Falls (South Dakota) | 4,470.42 mi (7,194.45 km) |
| Irun to Skokie (Illinois) | 4,156.17 mi (6,688.71 km) |
| Irun to Sleepy Hollow (New York) | 3,572.41 mi (5,749.24 km) |
| Irun to Slidell (Louisiana) | 4,725.99 mi (7,605.74 km) |
| Irun to Smithfield (North Carolina) | 3,977.74 mi (6,401.55 km) |
| Irun to Smithfield (Utah) | 5,127.57 mi (8,252.03 km) |
| Irun to Smithville (Missouri) | 4,553.73 mi (7,328.52 km) |
