| Mercer Island to Quarteira | 5,320.81 mi (8,563.02 km) |
| Mercer Island to Queluz | 5,190.82 mi (8,353.82 km) |
| Mercer Island to Reguengos de Monsaraz | 5,268.27 mi (8,478.46 km) |
| Mercer Island to Resende | 5,110.27 mi (8,224.18 km) |
| Mercer Island to Ribeira Brava | 5,218.83 mi (8,398.90 km) |
| Mercer Island to Ribeira Grande | 4,631.54 mi (7,453.74 km) |
| Mercer Island to Rio de Mouro | 5,187.60 mi (8,348.63 km) |
| Mercer Island to Rio Maior | 5,171.49 mi (8,322.71 km) |
| Mercer Island to Rio Tinto | 5,086.54 mi (8,186.00 km) |
| Mercer Island to Sabugal | 5,179.90 mi (8,336.25 km) |
| Mercer Island to Sacavem | 5,194.12 mi (8,359.12 km) |
| Mercer Island to Salvaterra de Magos | 5,193.43 mi (8,358.02 km) |
| Mercer Island to Santa Comba Dao | 5,142.65 mi (8,276.29 km) |
| Mercer Island to Santa Cruz | 5,228.60 mi (8,414.62 km) |
| Mercer Island to Santa Iria da Azoia | 5,191.96 mi (8,355.65 km) |
