| Irthlingborough to Hisarcik | 1,679.93 mi (2,703.58 km) |
| Irthlingborough to Hizan | 2,265.61 mi (3,646.14 km) |
| Irthlingborough to Hopa | 2,089.63 mi (3,362.93 km) |
| Irthlingborough to Huyuk | 1,834.52 mi (2,952.38 km) |
| Irthlingborough to Idil | 2,282.82 mi (3,673.84 km) |
| Irthlingborough to Igdir | 2,260.62 mi (3,638.11 km) |
| Irthlingborough to Ihsaniye | 1,737.00 mi (2,795.43 km) |
| Irthlingborough to Ilic | 2,050.85 mi (3,300.52 km) |
| Irthlingborough to Ilica | 2,136.02 mi (3,437.60 km) |
| Irthlingborough to Incesu | 1,948.22 mi (3,135.36 km) |
| Irthlingborough to Incirliova | 1,688.09 mi (2,716.73 km) |
| Irthlingborough to Inebolu | 1,745.33 mi (2,808.83 km) |
| Irthlingborough to Inegol | 1,652.87 mi (2,660.03 km) |
| Irthlingborough to Ipsala | 1,490.63 mi (2,398.93 km) |
| Irthlingborough to Iskenderun | 2,082.49 mi (3,351.44 km) |
