| Thornaby on Tees to Idar-Oberstein | 495.01 mi (796.64 km) |
| Thornaby on Tees to Idstein | 502.19 mi (808.19 km) |
| Thornaby on Tees to Illertissen | 656.60 mi (1,056.69 km) |
| Thornaby on Tees to Illingen | 504.03 mi (811.16 km) |
| Thornaby on Tees to Ilmenau | 577.27 mi (929.02 km) |
| Thornaby on Tees to Ilsede | 498.14 mi (801.68 km) |
| Thornaby on Tees to Ilsenburg | 528.84 mi (851.09 km) |
| Thornaby on Tees to Ilsfeld | 588.94 mi (947.80 km) |
| Thornaby on Tees to Ilvesheim | 546.52 mi (879.54 km) |
| Thornaby on Tees to Immenstadt im Allgau | 693.78 mi (1,116.52 km) |
| Thornaby on Tees to Ingelheim | 506.15 mi (814.57 km) |
| Thornaby on Tees to Ingolstadt | 675.04 mi (1,086.38 km) |
| Thornaby on Tees to Iserlohn | 432.44 mi (695.95 km) |
| Thornaby on Tees to Isernhagen-Sud | 480.99 mi (774.07 km) |
| Thornaby on Tees to Ismaning | 708.31 mi (1,139.91 km) |
