| Gaithersburg to Rosolini | 4,782.64 mi (7,696.92 km) |
| Gaithersburg to Rossano | 4,752.40 mi (7,648.24 km) |
| Gaithersburg to Rottofreno | 4,246.86 mi (6,834.67 km) |
| Gaithersburg to Rovato | 4,249.52 mi (6,838.94 km) |
| Gaithersburg to Roverbella | 4,292.16 mi (6,907.56 km) |
| Gaithersburg to Rovereto | 4,283.75 mi (6,894.03 km) |
| Gaithersburg to Rovigo | 4,342.13 mi (6,987.99 km) |
| Gaithersburg to Rozzano | 4,219.17 mi (6,790.10 km) |
| Gaithersburg to Rubano | 4,329.78 mi (6,968.10 km) |
| Gaithersburg to Rubiera | 4,313.44 mi (6,941.81 km) |
| Gaithersburg to Ruffano | 4,807.23 mi (7,736.48 km) |
| Gaithersburg to Russi | 4,376.38 mi (7,043.10 km) |
| Gaithersburg to Rutigliano | 4,711.67 mi (7,582.71 km) |
| Gaithersburg to Ruvo di Puglia | 4,686.57 mi (7,542.30 km) |
| Gaithersburg to Sabaudia | 4,528.04 mi (7,287.18 km) |
