| Gaithersburg to Rodgau | 4,064.97 mi (6,541.93 km) |
| Gaithersburg to Roding | 4,235.69 mi (6,816.69 km) |
| Gaithersburg to Rodinghausen | 3,984.97 mi (6,413.19 km) |
| Gaithersburg to Roetgen | 3,939.11 mi (6,339.38 km) |
| Gaithersburg to Rommerskirchen | 3,948.28 mi (6,354.14 km) |
| Gaithersburg to Ronnenberg | 4,028.44 mi (6,483.16 km) |
| Gaithersburg to Rosbach vor der Hohe | 4,049.38 mi (6,516.84 km) |
| Gaithersburg to Rosdorf | 4,061.62 mi (6,536.54 km) |
| Gaithersburg to Rosenheim | 4,264.07 mi (6,862.36 km) |
| Gaithersburg to Rosrath | 3,971.62 mi (6,391.70 km) |
| Gaithersburg to Rossdorf | 4,064.50 mi (6,541.19 km) |
| Gaithersburg to Rosstal | 4,163.96 mi (6,701.25 km) |
| Gaithersburg to Rostock | 4,070.51 mi (6,550.85 km) |
| Gaithersburg to Rotenburg an der Fulda | 4,069.67 mi (6,549.51 km) |
| Gaithersburg to Roth | 4,177.11 mi (6,722.42 km) |
