| Irthlingborough to Fatima | 957.38 mi (1,540.75 km) |
| Irthlingborough to Felgueiras | 836.57 mi (1,346.33 km) |
| Irthlingborough to Ferreira do Zezere | 946.50 mi (1,523.24 km) |
| Irthlingborough to Figueira da Foz | 927.26 mi (1,492.28 km) |
| Irthlingborough to Funchal | 1,584.81 mi (2,550.51 km) |
| Irthlingborough to Fundao | 903.31 mi (1,453.74 km) |
| Irthlingborough to Gafanha da Nazare | 893.55 mi (1,438.03 km) |
| Irthlingborough to Gondomar | 857.09 mi (1,379.36 km) |
| Irthlingborough to Gouveia | 881.14 mi (1,418.06 km) |
| Irthlingborough to Grandola | 1,050.04 mi (1,689.87 km) |
| Irthlingborough to Guarda | 874.32 mi (1,407.09 km) |
| Irthlingborough to Guimaraes | 833.28 mi (1,341.03 km) |
| Irthlingborough to Horta | 1,642.71 mi (2,643.69 km) |
| Irthlingborough to Idanha-a-Nova | 913.05 mi (1,469.41 km) |
| Irthlingborough to Ilhavo | 894.83 mi (1,440.09 km) |
