| Mercer Island to Redondela | 5,026.34 mi (8,089.11 km) |
| Mercer Island to Reinosa | 5,132.03 mi (8,259.20 km) |
| Mercer Island to Requena | 5,420.85 mi (8,724.02 km) |
| Mercer Island to Reus | 5,395.03 mi (8,682.47 km) |
| Mercer Island to Rianxo | 5,000.44 mi (8,047.43 km) |
| Mercer Island to Ribadeo | 5,011.59 mi (8,065.37 km) |
| Mercer Island to Rincon de la Victoria | 5,470.67 mi (8,804.20 km) |
| Mercer Island to Ripoll | 5,367.77 mi (8,638.58 km) |
| Mercer Island to Ripollet | 5,406.81 mi (8,701.41 km) |
| Mercer Island to Rojales | 5,510.98 mi (8,869.06 km) |
| Mercer Island to Ronda | 5,439.79 mi (8,754.50 km) |
| Mercer Island to Roquetas de Mar | 5,523.61 mi (8,889.39 km) |
| Mercer Island to Rosas | 5,392.73 mi (8,678.76 km) |
| Mercer Island to Rubi | 5,403.33 mi (8,695.82 km) |
| Mercer Island to Rute | 5,434.95 mi (8,746.71 km) |
