| Boise to Sudbury | 4,837.43 mi (7,785.09 km) |
| Boise to Sunbury | 4,834.32 mi (7,780.08 km) |
| Boise to Sunderland | 4,635.42 mi (7,459.98 km) |
| Boise to Sunninghill | 4,828.42 mi (7,770.59 km) |
| Boise to Surbiton | 4,839.26 mi (7,788.03 km) |
| Boise to Sutton | 4,843.98 mi (7,795.63 km) |
| Boise to Sutton Coldfield | 4,736.46 mi (7,622.59 km) |
| Boise to Sutton in Ashfield | 4,725.57 mi (7,605.06 km) |
| Boise to Sutton on Hull | 4,721.05 mi (7,597.80 km) |
| Boise to Swadlincote | 4,734.02 mi (7,618.67 km) |
| Boise to Swallownest | 4,712.09 mi (7,583.38 km) |
| Boise to Swanage | 4,827.97 mi (7,769.87 km) |
| Boise to Swindon | 4,786.75 mi (7,703.53 km) |
| Boise to Swinton | 4,706.27 mi (7,574.01 km) |
| Boise to Swinton | 4,675.06 mi (7,523.77 km) |
