| Pittsburgh to Imola | 4,426.27 mi (7,123.39 km) |
| Pittsburgh to Impruneta | 4,431.43 mi (7,131.69 km) |
| Pittsburgh to Induno Olona | 4,252.52 mi (6,843.77 km) |
| Pittsburgh to Inverigo | 4,272.54 mi (6,875.99 km) |
| Pittsburgh to Inveruno | 4,264.78 mi (6,863.50 km) |
| Pittsburgh to Inzago | 4,290.65 mi (6,905.13 km) |
| Pittsburgh to Iseo | 4,309.94 mi (6,936.18 km) |
| Pittsburgh to Isernia | 4,637.39 mi (7,463.16 km) |
| Pittsburgh to Isola Capo Rizzuto | 4,866.14 mi (7,831.29 km) |
| Pittsburgh to Isola del Liri | 4,605.97 mi (7,412.60 km) |
| Pittsburgh to Isola della Scala | 4,363.55 mi (7,022.46 km) |
| Pittsburgh to Isola Vicentina | 4,368.56 mi (7,030.52 km) |
| Pittsburgh to Ispica | 4,859.39 mi (7,820.43 km) |
| Pittsburgh to Istrana | 4,393.45 mi (7,070.57 km) |
| Pittsburgh to Itri | 4,619.68 mi (7,434.66 km) |
