| Mercer Island to Rivalta di Torino | 5,351.29 mi (8,612.07 km) |
| Mercer Island to Rivarolo Canavese | 5,339.02 mi (8,592.33 km) |
| Mercer Island to Rivoli | 5,349.18 mi (8,608.68 km) |
| Mercer Island to Rocca di Papa | 5,678.03 mi (9,137.90 km) |
| Mercer Island to Rocca Priora | 5,678.26 mi (9,138.28 km) |
| Mercer Island to Roccapiemonte | 5,787.75 mi (9,314.48 km) |
| Mercer Island to Roccastrada | 5,564.46 mi (8,955.14 km) |
| Mercer Island to Romano di Lombardia | 5,379.52 mi (8,657.50 km) |
| Mercer Island to Rome | 5,664.56 mi (9,116.23 km) |
| Mercer Island to Roncade | 5,436.79 mi (8,749.66 km) |
| Mercer Island to Ronchi dei Legionari | 5,450.45 mi (8,771.66 km) |
| Mercer Island to Ronciglione | 5,633.95 mi (9,066.97 km) |
| Mercer Island to Rosa | 5,416.74 mi (8,717.40 km) |
| Mercer Island to Rosarno | 5,958.94 mi (9,589.99 km) |
| Mercer Island to Rosignano Marittimo | 5,523.43 mi (8,889.11 km) |
