| Boise to Stephenville (Texas) | 1,253.35 mi (2,017.07 km) |
| Boise to Sterling (Colorado) | 698.43 mi (1,124.02 km) |
| Boise to Sterling (Illinois) | 1,347.36 mi (2,168.37 km) |
| Boise to Sterling (Virginia) | 2,021.34 mi (3,253.04 km) |
| Boise to Sterling Heights (Michigan) | 1,665.48 mi (2,680.34 km) |
| Boise to Steubenville (Ohio) | 1,826.83 mi (2,940.01 km) |
| Boise to Stevens Point (Wisconsin) | 1,320.29 mi (2,124.80 km) |
| Boise to Stevenson Ranch (California) | 648.81 mi (1,044.17 km) |
| Boise to Stillwater (Minnesota) | 1,156.84 mi (1,861.75 km) |
| Boise to Stillwater (Oklahoma) | 1,135.73 mi (1,827.79 km) |
| Boise to Stockbridge (Georgia) | 1,849.47 mi (2,976.44 km) |
| Boise to Stockton (California) | 470.55 mi (757.27 km) |
| Boise to Stone Ridge (Virginia) | 2,015.77 mi (3,244.06 km) |
| Boise to Stonecrest (Georgia) | 1,848.29 mi (2,974.53 km) |
| Boise to Stony Brook (New York) | 2,187.41 mi (3,520.29 km) |
