| Acton to Silver Firs (Washington) | 4,760.74 mi (7,661.67 km) |
| Acton to Silver Spring (Maryland) | 3,653.69 mi (5,880.04 km) |
| Acton to Silver Springs Shores (Florida) | 4,331.01 mi (6,970.09 km) |
| Acton to Silverdale (Washington) | 4,785.96 mi (7,702.26 km) |
| Acton to Silverton (Oregon) | 4,941.33 mi (7,952.31 km) |
| Acton to Simi Valley (California) | 5,439.50 mi (8,754.04 km) |
| Acton to Simpsonville (South Carolina) | 4,066.36 mi (6,544.17 km) |
| Acton to Sioux City (Iowa) | 4,237.04 mi (6,818.85 km) |
| Acton to Sioux Falls (South Dakota) | 4,198.21 mi (6,756.37 km) |
| Acton to Skokie (Illinois) | 3,938.79 mi (6,338.86 km) |
| Acton to Sleepy Hollow (New York) | 3,433.33 mi (5,525.41 km) |
| Acton to Slidell (Louisiana) | 4,592.05 mi (7,390.19 km) |
| Acton to Smithfield (North Carolina) | 3,868.55 mi (6,225.82 km) |
| Acton to Smithfield (Utah) | 4,795.56 mi (7,717.70 km) |
| Acton to Smithville (Missouri) | 4,323.20 mi (6,957.51 km) |
