| Gaithersburg to Rivalta di Torino | 4,159.83 mi (6,694.59 km) |
| Gaithersburg to Rivarolo Canavese | 4,159.09 mi (6,693.40 km) |
| Gaithersburg to Rivoli | 4,158.67 mi (6,692.73 km) |
| Gaithersburg to Rocca di Papa | 4,497.63 mi (7,238.24 km) |
| Gaithersburg to Rocca Priora | 4,499.24 mi (7,240.83 km) |
| Gaithersburg to Roccapiemonte | 4,621.48 mi (7,437.55 km) |
| Gaithersburg to Roccastrada | 4,385.92 mi (7,058.45 km) |
| Gaithersburg to Romano di Lombardia | 4,240.54 mi (6,824.50 km) |
| Gaithersburg to Rome | 4,482.81 mi (7,214.39 km) |
| Gaithersburg to Roncade | 4,348.35 mi (6,997.99 km) |
| Gaithersburg to Ronchi dei Legionari | 4,388.28 mi (7,062.26 km) |
| Gaithersburg to Ronciglione | 4,456.95 mi (7,172.77 km) |
| Gaithersburg to Rosa | 4,319.55 mi (6,951.64 km) |
| Gaithersburg to Rosarno | 4,764.97 mi (7,668.47 km) |
| Gaithersburg to Rosignano Marittimo | 4,341.87 mi (6,987.56 km) |
