| Umbertide to Silver Firs (Washington) | 5,556.41 mi (8,942.17 km) |
| Umbertide to Silver Spring (Maryland) | 4,423.60 mi (7,119.09 km) |
| Umbertide to Silver Springs Shores (Florida) | 5,072.38 mi (8,163.21 km) |
| Umbertide to Silverdale (Washington) | 5,580.98 mi (8,981.73 km) |
| Umbertide to Silverton (Oregon) | 5,740.68 mi (9,238.73 km) |
| Umbertide to Simi Valley (California) | 6,254.41 mi (10,065.50 km) |
| Umbertide to Simpsonville (South Carolina) | 4,833.09 mi (7,778.10 km) |
| Umbertide to Sioux City (Iowa) | 5,049.30 mi (8,126.06 km) |
| Umbertide to Sioux Falls (South Dakota) | 5,011.73 mi (8,065.60 km) |
| Umbertide to Skokie (Illinois) | 4,740.64 mi (7,629.33 km) |
| Umbertide to Sleepy Hollow (New York) | 4,204.41 mi (6,766.34 km) |
| Umbertide to Slidell (Louisiana) | 5,364.64 mi (8,633.56 km) |
| Umbertide to Smithfield (North Carolina) | 4,626.69 mi (7,445.94 km) |
| Umbertide to Smithfield (Utah) | 5,610.47 mi (9,029.19 km) |
| Umbertide to Smithville (Missouri) | 5,129.29 mi (8,254.79 km) |
