| Colleferro to Silver Firs (Washington) | 5,668.04 mi (9,121.83 km) |
| Colleferro to Silver Spring (Maryland) | 4,508.76 mi (7,256.15 km) |
| Colleferro to Silver Springs Shores (Florida) | 5,149.73 mi (8,287.70 km) |
| Colleferro to Silverdale (Washington) | 5,692.69 mi (9,161.50 km) |
| Colleferro to Silverton (Oregon) | 5,851.86 mi (9,417.66 km) |
| Colleferro to Simi Valley (California) | 6,360.93 mi (10,236.92 km) |
| Colleferro to Simpsonville (South Carolina) | 4,916.99 mi (7,913.13 km) |
| Colleferro to Sioux City (Iowa) | 5,149.03 mi (8,286.56 km) |
| Colleferro to Sioux Falls (South Dakota) | 5,112.37 mi (8,227.56 km) |
| Colleferro to Skokie (Illinois) | 4,835.43 mi (7,781.88 km) |
| Colleferro to Sleepy Hollow (New York) | 4,290.12 mi (6,904.28 km) |
| Colleferro to Slidell (Louisiana) | 5,449.63 mi (8,770.33 km) |
| Colleferro to Smithfield (North Carolina) | 4,708.63 mi (7,577.81 km) |
| Colleferro to Smithfield (Utah) | 5,716.98 mi (9,200.59 km) |
| Colleferro to Smithville (Missouri) | 5,225.68 mi (8,409.93 km) |
