| Middlesbrough to Idar-Oberstein | 493.73 mi (794.57 km) |
| Middlesbrough to Idstein | 500.62 mi (805.67 km) |
| Middlesbrough to Illertissen | 655.23 mi (1,054.48 km) |
| Middlesbrough to Illingen | 502.88 mi (809.31 km) |
| Middlesbrough to Ilmenau | 575.28 mi (925.82 km) |
| Middlesbrough to Ilsede | 495.84 mi (797.98 km) |
| Middlesbrough to Ilsenburg | 526.60 mi (847.48 km) |
| Middlesbrough to Ilsfeld | 587.51 mi (945.50 km) |
| Middlesbrough to Ilvesheim | 545.09 mi (877.25 km) |
| Middlesbrough to Immenstadt im Allgau | 692.51 mi (1,114.48 km) |
| Middlesbrough to Ingelheim | 504.68 mi (812.20 km) |
| Middlesbrough to Ingolstadt | 673.40 mi (1,083.73 km) |
| Middlesbrough to Iserlohn | 430.62 mi (693.02 km) |
| Middlesbrough to Isernhagen-Sud | 478.66 mi (770.34 km) |
| Middlesbrough to Ismaning | 706.74 mi (1,137.38 km) |
