| Mercer Island to Rosolini | 6,035.98 mi (9,713.97 km) |
| Mercer Island to Rossano | 5,907.84 mi (9,507.74 km) |
| Mercer Island to Rottofreno | 5,401.70 mi (8,693.20 km) |
| Mercer Island to Rovato | 5,382.70 mi (8,662.61 km) |
| Mercer Island to Roverbella | 5,419.48 mi (8,721.80 km) |
| Mercer Island to Rovereto | 5,389.54 mi (8,673.63 km) |
| Mercer Island to Rovigo | 5,455.57 mi (8,779.89 km) |
| Mercer Island to Rozzano | 5,372.43 mi (8,646.08 km) |
| Mercer Island to Rubano | 5,434.15 mi (8,745.42 km) |
| Mercer Island to Rubiera | 5,456.71 mi (8,781.72 km) |
| Mercer Island to Ruffano | 5,919.56 mi (9,526.61 km) |
| Mercer Island to Russi | 5,503.72 mi (8,857.38 km) |
| Mercer Island to Rutigliano | 5,829.50 mi (9,381.67 km) |
| Mercer Island to Ruvo di Puglia | 5,808.48 mi (9,347.84 km) |
| Mercer Island to Sabaudia | 5,713.98 mi (9,195.76 km) |
