| South Portland to Hisarcik | 4,828.78 mi (7,771.17 km) |
| South Portland to Hizan | 5,391.45 mi (8,676.71 km) |
| South Portland to Hopa | 5,196.13 mi (8,362.36 km) |
| South Portland to Huyuk | 4,983.89 mi (8,020.80 km) |
| South Portland to Idil | 5,416.19 mi (8,716.52 km) |
| South Portland to Igdir | 5,364.35 mi (8,633.09 km) |
| South Portland to Ihsaniye | 4,886.63 mi (7,864.26 km) |
| South Portland to Ilic | 5,185.86 mi (8,345.83 km) |
| South Portland to Ilica | 5,256.46 mi (8,459.45 km) |
| South Portland to Incesu | 5,095.68 mi (8,200.70 km) |
| South Portland to Incirliova | 4,829.17 mi (7,771.79 km) |
| South Portland to Inebolu | 4,883.51 mi (7,859.25 km) |
| South Portland to Inegol | 4,802.78 mi (7,729.33 km) |
| South Portland to Ipsala | 4,639.10 mi (7,465.91 km) |
| South Portland to Iskenderun | 5,232.02 mi (8,420.12 km) |
