| Boulder to Seymour (Tennessee) | 1,201.88 mi (1,934.25 km) |
| Boulder to Shady Hills (Florida) | 1,518.82 mi (2,444.30 km) |
| Boulder to Shafter (California) | 823.03 mi (1,324.54 km) |
| Boulder to Shaker Heights (Ohio) | 1,240.81 mi (1,996.90 km) |
| Boulder to Shakopee (Minnesota) | 683.63 mi (1,100.20 km) |
| Boulder to Sharon (Pennsylvania) | 1,296.26 mi (2,086.13 km) |
| Boulder to Sharonville (Ohio) | 1,107.54 mi (1,782.42 km) |
| Boulder to Shasta Lake (California) | 901.42 mi (1,450.70 km) |
| Boulder to Shawnee (Kansas) | 560.71 mi (902.37 km) |
| Boulder to Shawnee (Oklahoma) | 555.94 mi (894.71 km) |
| Boulder to Sheboygan (Wisconsin) | 935.10 mi (1,504.90 km) |
| Boulder to Shelby (North Carolina) | 1,333.02 mi (2,145.28 km) |
| Boulder to Shelbyville (Indiana) | 1,032.49 mi (1,661.63 km) |
| Boulder to Shelbyville (Kentucky) | 1,078.41 mi (1,735.54 km) |
| Boulder to Shelbyville (Tennessee) | 1,071.12 mi (1,723.81 km) |
