| Gaithersburg to Sudbury | 3,684.26 mi (5,929.24 km) |
| Gaithersburg to Sunbury | 3,651.36 mi (5,876.30 km) |
| Gaithersburg to Sunderland | 3,542.88 mi (5,701.71 km) |
| Gaithersburg to Sunninghill | 3,642.38 mi (5,861.84 km) |
| Gaithersburg to Surbiton | 3,656.78 mi (5,885.02 km) |
| Gaithersburg to Sutton | 3,661.93 mi (5,893.31 km) |
| Gaithersburg to Sutton Coldfield | 3,570.66 mi (5,746.42 km) |
| Gaithersburg to Sutton in Ashfield | 3,581.78 mi (5,764.32 km) |
| Gaithersburg to Sutton on Hull | 3,606.22 mi (5,803.65 km) |
| Gaithersburg to Swadlincote | 3,577.04 mi (5,756.69 km) |
| Gaithersburg to Swallownest | 3,574.52 mi (5,752.63 km) |
| Gaithersburg to Swanage | 3,605.88 mi (5,803.10 km) |
| Gaithersburg to Swindon | 3,592.99 mi (5,782.35 km) |
| Gaithersburg to Swinton | 3,572.44 mi (5,749.29 km) |
| Gaithersburg to Swinton | 3,531.47 mi (5,683.35 km) |
