| Catonsville to Rivalta di Torino | 4,134.12 mi (6,653.22 km) |
| Catonsville to Rivarolo Canavese | 4,133.43 mi (6,652.11 km) |
| Catonsville to Rivoli | 4,132.97 mi (6,651.37 km) |
| Catonsville to Rocca di Papa | 4,471.78 mi (7,196.64 km) |
| Catonsville to Rocca Priora | 4,473.40 mi (7,199.24 km) |
| Catonsville to Roccapiemonte | 4,595.61 mi (7,395.93 km) |
| Catonsville to Roccastrada | 4,360.13 mi (7,016.95 km) |
| Catonsville to Romano di Lombardia | 4,215.01 mi (6,783.41 km) |
| Catonsville to Rome | 4,456.96 mi (7,172.79 km) |
| Catonsville to Roncade | 4,322.98 mi (6,957.16 km) |
| Catonsville to Ronchi dei Legionari | 4,363.01 mi (7,021.58 km) |
| Catonsville to Ronciglione | 4,431.14 mi (7,131.22 km) |
| Catonsville to Rosa | 4,294.15 mi (6,910.77 km) |
| Catonsville to Rosarno | 4,738.94 mi (7,626.59 km) |
| Catonsville to Rosignano Marittimo | 4,316.09 mi (6,946.08 km) |
