| Boulder to Shelton (Connecticut) | 1,675.79 mi (2,696.92 km) |
| Boulder to Shelton (Washington) | 1,018.84 mi (1,639.67 km) |
| Boulder to Shenandoah (Louisiana) | 1,041.28 mi (1,675.78 km) |
| Boulder to Shepherdsville (Kentucky) | 1,057.07 mi (1,701.19 km) |
| Boulder to Sheridan (Wyoming) | 341.01 mi (548.81 km) |
| Boulder to Sherman (Texas) | 649.94 mi (1,045.98 km) |
| Boulder to Sherrelwood (Colorado) | 18.48 mi (29.75 km) |
| Boulder to Sherwood (Arkansas) | 799.09 mi (1,286.01 km) |
| Boulder to Sherwood (Oregon) | 963.80 mi (1,551.09 km) |
| Boulder to Shiloh (Illinois) | 825.35 mi (1,328.27 km) |
| Boulder to Shiloh (Ohio) | 1,111.39 mi (1,788.61 km) |
| Boulder to Shiloh (Pennsylvania) | 1,499.91 mi (2,413.87 km) |
| Boulder to Shirley (New York) | 1,694.49 mi (2,727.02 km) |
| Boulder to Shively (Kentucky) | 1,047.65 mi (1,686.02 km) |
| Boulder to Shoreline (Washington) | 1,001.39 mi (1,611.59 km) |
