| Elk River to Silver Firs (Washington) | 1,360.29 mi (2,189.17 km) |
| Elk River to Silver Spring (Maryland) | 951.02 mi (1,530.51 km) |
| Elk River to Silver Springs Shores (Florida) | 1,285.23 mi (2,068.39 km) |
| Elk River to Silverdale (Washington) | 1,385.88 mi (2,230.36 km) |
| Elk River to Silverton (Oregon) | 1,415.44 mi (2,277.93 km) |
| Elk River to Simi Valley (California) | 1,530.48 mi (2,463.08 km) |
| Elk River to Simpsonville (South Carolina) | 943.95 mi (1,519.13 km) |
| Elk River to Sioux City (Iowa) | 241.06 mi (387.95 km) |
| Elk River to Sioux Falls (South Dakota) | 199.21 mi (320.59 km) |
| Elk River to Skokie (Illinois) | 369.44 mi (594.56 km) |
| Elk River to Sleepy Hollow (New York) | 1,031.08 mi (1,659.37 km) |
| Elk River to Slidell (Louisiana) | 1,059.35 mi (1,704.86 km) |
| Elk River to Smithfield (North Carolina) | 1,046.09 mi (1,683.52 km) |
| Elk River to Smithfield (Utah) | 942.97 mi (1,517.57 km) |
| Elk River to Smithville (Missouri) | 413.58 mi (665.60 km) |
