| Box Elder to Southern Pines (North Carolina) | 1,395.45 mi (2,245.75 km) |
| Box Elder to Southfield (Michigan) | 1,000.72 mi (1,610.50 km) |
| Box Elder to Southgate (Michigan) | 1,007.90 mi (1,622.06 km) |
| Box Elder to Southlake (Texas) | 834.32 mi (1,342.71 km) |
| Box Elder to Spanaway (Washington) | 954.77 mi (1,536.55 km) |
| Box Elder to Spanish Fork (Utah) | 518.14 mi (833.87 km) |
| Box Elder to Spanish Lake (Missouri) | 760.21 mi (1,223.44 km) |
| Box Elder to Spanish Springs (Nevada) | 905.14 mi (1,456.68 km) |
| Box Elder to Sparks (Nevada) | 909.85 mi (1,464.27 km) |
| Box Elder to Spartanburg (South Carolina) | 1,287.76 mi (2,072.45 km) |
| Box Elder to Spearfish (South Dakota) | 44.74 mi (72.00 km) |
| Box Elder to Speedway (Indiana) | 913.02 mi (1,469.36 km) |
| Box Elder to Spencer (Iowa) | 401.91 mi (646.81 km) |
| Box Elder to Spokane (Washington) | 731.27 mi (1,176.86 km) |
| Box Elder to Spokane Valley (Washington) | 722.25 mi (1,162.35 km) |
