| North Potomac to Rivalta di Torino | 4,162.46 mi (6,698.83 km) |
| North Potomac to Rivarolo Canavese | 4,161.73 mi (6,697.66 km) |
| North Potomac to Rivoli | 4,161.31 mi (6,696.97 km) |
| North Potomac to Rocca di Papa | 4,500.24 mi (7,242.44 km) |
| North Potomac to Rocca Priora | 4,501.85 mi (7,245.03 km) |
| North Potomac to Roccapiemonte | 4,624.08 mi (7,441.73 km) |
| North Potomac to Roccastrada | 4,388.54 mi (7,062.66 km) |
| North Potomac to Romano di Lombardia | 4,243.21 mi (6,828.79 km) |
| North Potomac to Rome | 4,485.42 mi (7,218.58 km) |
| North Potomac to Roncade | 4,351.04 mi (7,002.32 km) |
| North Potomac to Ronchi dei Legionari | 4,390.99 mi (7,066.62 km) |
| North Potomac to Ronciglione | 4,459.56 mi (7,176.98 km) |
| North Potomac to Rosa | 4,322.23 mi (6,955.96 km) |
| North Potomac to Rosarno | 4,767.53 mi (7,672.60 km) |
| North Potomac to Rosignano Marittimo | 4,344.49 mi (6,991.78 km) |
