| South Houston to Imola | 5,562.70 mi (8,952.30 km) |
| South Houston to Impruneta | 5,568.06 mi (8,960.93 km) |
| South Houston to Induno Olona | 5,388.85 mi (8,672.52 km) |
| South Houston to Inverigo | 5,408.86 mi (8,704.71 km) |
| South Houston to Inveruno | 5,401.24 mi (8,692.46 km) |
| South Houston to Inzago | 5,427.00 mi (8,733.92 km) |
| South Houston to Iseo | 5,446.13 mi (8,764.70 km) |
| South Houston to Isernia | 5,774.04 mi (9,292.41 km) |
| South Houston to Isola Capo Rizzuto | 6,002.57 mi (9,660.21 km) |
| South Houston to Isola del Liri | 5,742.60 mi (9,241.81 km) |
| South Houston to Isola della Scala | 5,499.73 mi (8,850.96 km) |
| South Houston to Isola Vicentina | 5,504.40 mi (8,858.48 km) |
| South Houston to Ispica | 5,993.33 mi (9,645.32 km) |
| South Houston to Istrana | 5,529.05 mi (8,898.14 km) |
| South Houston to Itri | 5,756.23 mi (9,263.75 km) |
