| Gaithersburg to Roy (Utah) | 1,832.74 mi (2,949.51 km) |
| Gaithersburg to Royal Kunia (Hawaii) | 4,821.56 mi (7,759.55 km) |
| Gaithersburg to Royal Oak (Michigan) | 388.20 mi (624.75 km) |
| Gaithersburg to Royal Palm Beach (Florida) | 876.30 mi (1,410.27 km) |
| Gaithersburg to Royse City (Texas) | 1,146.00 mi (1,844.31 km) |
| Gaithersburg to Ruskin (Florida) | 844.37 mi (1,358.88 km) |
| Gaithersburg to Russellville (Alabama) | 663.12 mi (1,067.18 km) |
| Gaithersburg to Russellville (Arkansas) | 914.60 mi (1,471.91 km) |
| Gaithersburg to Ruston (Louisiana) | 975.08 mi (1,569.24 km) |
| Gaithersburg to Rutherford (New Jersey) | 201.56 mi (324.37 km) |
| Gaithersburg to Rutland (Vermont) | 379.08 mi (610.08 km) |
| Gaithersburg to Sabana Grande (Puerto Rico) | 1,579.09 mi (2,541.30 km) |
| Gaithersburg to Sachse (Texas) | 1,159.62 mi (1,866.23 km) |
| Gaithersburg to Saco (Maine) | 463.67 mi (746.21 km) |
| Gaithersburg to Sacramento (California) | 2,357.52 mi (3,794.06 km) |
