| Irthlingborough to Quarteira | 1,114.89 mi (1,794.25 km) |
| Irthlingborough to Queluz | 1,025.29 mi (1,650.04 km) |
| Irthlingborough to Reguengos de Monsaraz | 1,016.76 mi (1,636.31 km) |
| Irthlingborough to Resende | 848.65 mi (1,365.77 km) |
| Irthlingborough to Ribeira Brava | 1,586.18 mi (2,552.70 km) |
| Irthlingborough to Ribeira Grande | 1,561.36 mi (2,512.77 km) |
| Irthlingborough to Rio de Mouro | 1,025.44 mi (1,650.29 km) |
| Irthlingborough to Rio Maior | 981.34 mi (1,579.32 km) |
| Irthlingborough to Rio Tinto | 855.86 mi (1,377.37 km) |
| Irthlingborough to Sabugal | 882.13 mi (1,419.65 km) |
| Irthlingborough to Sacavem | 1,019.41 mi (1,640.59 km) |
| Irthlingborough to Salvaterra de Magos | 998.95 mi (1,607.66 km) |
| Irthlingborough to Santa Comba Dao | 897.02 mi (1,443.62 km) |
| Irthlingborough to Santa Cruz | 1,579.77 mi (2,542.39 km) |
| Irthlingborough to Santa Iria da Azoia | 1,015.73 mi (1,634.65 km) |
