| Herisau to Idar-Oberstein | 183.99 mi (296.11 km) |
| Herisau to Idstein | 201.17 mi (323.75 km) |
| Herisau to Illertissen | 68.93 mi (110.94 km) |
| Herisau to Illingen | 171.12 mi (275.40 km) |
| Herisau to Ilmenau | 240.01 mi (386.25 km) |
| Herisau to Ilsede | 339.87 mi (546.96 km) |
| Herisau to Ilsenburg | 316.18 mi (508.84 km) |
| Herisau to Ilsfeld | 115.16 mi (185.33 km) |
| Herisau to Ilvesheim | 147.86 mi (237.96 km) |
| Herisau to Immenstadt im Allgau | 46.14 mi (74.25 km) |
| Herisau to Ingelheim | 187.36 mi (301.53 km) |
| Herisau to Ingolstadt | 137.89 mi (221.92 km) |
| Herisau to Iserlohn | 285.57 mi (459.58 km) |
| Herisau to Isernhagen-Sud | 349.97 mi (563.22 km) |
| Herisau to Ismaning | 125.92 mi (202.65 km) |
