| Pittsburgh to Idar-Oberstein | 4,062.53 mi (6,538.01 km) |
| Pittsburgh to Idstein | 4,084.24 mi (6,572.95 km) |
| Pittsburgh to Illertissen | 4,222.20 mi (6,794.98 km) |
| Pittsburgh to Illingen | 4,062.76 mi (6,538.38 km) |
| Pittsburgh to Ilmenau | 4,171.62 mi (6,713.58 km) |
| Pittsburgh to Ilsede | 4,091.92 mi (6,585.30 km) |
| Pittsburgh to Ilsenburg | 4,123.62 mi (6,636.32 km) |
| Pittsburgh to Ilsfeld | 4,160.91 mi (6,696.33 km) |
| Pittsburgh to Ilvesheim | 4,119.95 mi (6,630.41 km) |
| Pittsburgh to Immenstadt im Allgau | 4,249.89 mi (6,839.54 km) |
| Pittsburgh to Ingelheim | 4,083.55 mi (6,571.84 km) |
| Pittsburgh to Ingolstadt | 4,256.67 mi (6,850.45 km) |
| Pittsburgh to Iserlohn | 4,024.06 mi (6,476.10 km) |
| Pittsburgh to Isernhagen-Sud | 4,074.37 mi (6,557.06 km) |
| Pittsburgh to Ismaning | 4,285.17 mi (6,896.32 km) |
