| Irthlingborough to Naklo | 789.74 mi (1,270.97 km) |
| Irthlingborough to Nazarje | 812.13 mi (1,307.00 km) |
| Irthlingborough to Nova Gorica | 778.17 mi (1,252.35 km) |
| Irthlingborough to Nova Vas | 818.33 mi (1,316.97 km) |
| Irthlingborough to Novo Mesto | 842.03 mi (1,355.12 km) |
| Irthlingborough to Odranci | 853.09 mi (1,372.91 km) |
| Irthlingborough to Oplotnica | 828.49 mi (1,333.32 km) |
| Irthlingborough to Ormoz | 854.95 mi (1,375.91 km) |
| Irthlingborough to Osilnica | 836.17 mi (1,345.68 km) |
| Irthlingborough to Pesnica | 828.41 mi (1,333.20 km) |
| Irthlingborough to Piran | 794.59 mi (1,278.76 km) |
| Irthlingborough to Pivka | 810.83 mi (1,304.90 km) |
| Irthlingborough to Podcetrtek | 843.61 mi (1,357.66 km) |
| Irthlingborough to Podlehnik | 847.31 mi (1,363.61 km) |
| Irthlingborough to Podvelka | 815.95 mi (1,313.14 km) |
