| Porcari to Silver Firs (Washington) | 5,481.46 mi (8,821.56 km) |
| Porcari to Silver Spring (Maryland) | 4,330.39 mi (6,969.09 km) |
| Porcari to Silver Springs Shores (Florida) | 4,978.65 mi (8,012.36 km) |
| Porcari to Silverdale (Washington) | 5,506.24 mi (8,861.43 km) |
| Porcari to Silverton (Oregon) | 5,664.62 mi (9,116.32 km) |
| Porcari to Simi Valley (California) | 6,171.15 mi (9,931.51 km) |
| Porcari to Simpsonville (South Carolina) | 4,739.73 mi (7,627.86 km) |
| Porcari to Sioux City (Iowa) | 4,960.71 mi (7,983.49 km) |
| Porcari to Sioux Falls (South Dakota) | 4,923.67 mi (7,923.88 km) |
| Porcari to Skokie (Illinois) | 4,649.77 mi (7,483.08 km) |
| Porcari to Sleepy Hollow (New York) | 4,111.27 mi (6,616.45 km) |
| Porcari to Slidell (Louisiana) | 5,271.43 mi (8,483.55 km) |
| Porcari to Smithfield (North Carolina) | 4,533.15 mi (7,295.39 km) |
| Porcari to Smithfield (Utah) | 5,527.20 mi (8,895.18 km) |
| Porcari to Smithville (Missouri) | 5,039.06 mi (8,109.58 km) |
