| Hardenberg to Idar-Oberstein | 199.58 mi (321.19 km) |
| Hardenberg to Idstein | 177.14 mi (285.08 km) |
| Hardenberg to Illertissen | 337.03 mi (542.39 km) |
| Hardenberg to Illingen | 221.24 mi (356.05 km) |
| Hardenberg to Ilmenau | 225.74 mi (363.29 km) |
| Hardenberg to Ilsede | 151.71 mi (244.15 km) |
| Hardenberg to Ilsenburg | 178.78 mi (287.73 km) |
| Hardenberg to Ilsfeld | 268.76 mi (432.53 km) |
| Hardenberg to Ilvesheim | 229.97 mi (370.09 km) |
| Hardenberg to Immenstadt im Allgau | 380.46 mi (612.29 km) |
| Hardenberg to Ingelheim | 189.59 mi (305.11 km) |
| Hardenberg to Ingolstadt | 336.61 mi (541.72 km) |
| Hardenberg to Iserlohn | 93.18 mi (149.96 km) |
| Hardenberg to Isernhagen-Sud | 136.59 mi (219.83 km) |
| Hardenberg to Ismaning | 373.33 mi (600.81 km) |
