| Irthlingborough to Irun | 623.25 mi (1,003.02 km) |
| Irthlingborough to Isla-Cristina | 1,094.44 mi (1,761.33 km) |
| Irthlingborough to Jaca | 675.32 mi (1,086.83 km) |
| Irthlingborough to Jaen | 1,017.30 mi (1,637.18 km) |
| Irthlingborough to Jerez de la Frontera | 1,113.71 mi (1,792.34 km) |
| Irthlingborough to Jerez de los Caballeros | 1,011.83 mi (1,628.38 km) |
| Irthlingborough to Jodar | 1,009.88 mi (1,625.24 km) |
| Irthlingborough to Jumilla | 957.19 mi (1,540.45 km) |
| Irthlingborough to La Algaba | 1,060.23 mi (1,706.27 km) |
| Irthlingborough to La Baneza | 735.22 mi (1,183.22 km) |
| Irthlingborough to La Carlota | 1,034.00 mi (1,664.06 km) |
| Irthlingborough to La Carolina | 981.95 mi (1,580.29 km) |
| Irthlingborough to La Corredoria | 662.67 mi (1,066.47 km) |
| Irthlingborough to La Eliana | 881.49 mi (1,418.63 km) |
| Irthlingborough to La Escala | 726.82 mi (1,169.70 km) |
