| Duluth to Quarteira | 4,163.84 mi (6,701.05 km) |
| Duluth to Queluz | 4,042.53 mi (6,505.82 km) |
| Duluth to Reguengos de Monsaraz | 4,130.84 mi (6,647.95 km) |
| Duluth to Resende | 4,000.30 mi (6,437.86 km) |
| Duluth to Ribeira Brava | 3,951.69 mi (6,359.63 km) |
| Duluth to Ribeira Grande | 3,357.21 mi (5,402.91 km) |
| Duluth to Rio de Mouro | 4,038.95 mi (6,500.06 km) |
| Duluth to Rio Maior | 4,032.55 mi (6,489.76 km) |
| Duluth to Rio Tinto | 3,972.37 mi (6,392.91 km) |
| Duluth to Sabugal | 4,068.52 mi (6,547.64 km) |
| Duluth to Sacavem | 4,047.65 mi (6,514.06 km) |
| Duluth to Salvaterra de Magos | 4,052.15 mi (6,521.31 km) |
| Duluth to Santa Comba Dao | 4,022.97 mi (6,474.35 km) |
| Duluth to Santa Cruz | 3,963.13 mi (6,378.05 km) |
| Duluth to Santa Iria da Azoia | 4,046.21 mi (6,511.75 km) |
