| Twickenham to Silver Firs (Washington) | 4,762.53 mi (7,664.55 km) |
| Twickenham to Silver Spring (Maryland) | 3,652.39 mi (5,877.95 km) |
| Twickenham to Silver Springs Shores (Florida) | 4,329.26 mi (6,967.28 km) |
| Twickenham to Silverdale (Washington) | 4,787.76 mi (7,705.16 km) |
| Twickenham to Silverton (Oregon) | 4,943.00 mi (7,955.00 km) |
| Twickenham to Simi Valley (California) | 5,440.38 mi (8,755.45 km) |
| Twickenham to Simpsonville (South Carolina) | 4,065.03 mi (6,542.03 km) |
| Twickenham to Sioux City (Iowa) | 4,237.10 mi (6,818.95 km) |
| Twickenham to Sioux Falls (South Dakota) | 4,198.37 mi (6,756.63 km) |
| Twickenham to Skokie (Illinois) | 3,938.34 mi (6,338.15 km) |
| Twickenham to Sleepy Hollow (New York) | 3,432.04 mi (5,523.34 km) |
| Twickenham to Slidell (Louisiana) | 4,590.86 mi (7,388.27 km) |
| Twickenham to Smithfield (North Carolina) | 3,867.04 mi (6,223.40 km) |
| Twickenham to Smithfield (Utah) | 4,796.44 mi (7,719.13 km) |
| Twickenham to Smithville (Missouri) | 4,322.93 mi (6,957.08 km) |
