| Donostia to Idar-Oberstein | 623.82 mi (1,003.94 km) |
| Donostia to Idstein | 679.13 mi (1,092.96 km) |
| Donostia to Illertissen | 671.57 mi (1,080.79 km) |
| Donostia to Illingen | 599.78 mi (965.26 km) |
| Donostia to Ilmenau | 790.71 mi (1,272.52 km) |
| Donostia to Ilsede | 834.99 mi (1,343.79 km) |
| Donostia to Ilsenburg | 832.55 mi (1,339.86 km) |
| Donostia to Ilsfeld | 666.19 mi (1,072.13 km) |
| Donostia to Ilvesheim | 657.19 mi (1,057.64 km) |
| Donostia to Immenstadt im Allgau | 659.05 mi (1,060.65 km) |
| Donostia to Ingelheim | 660.76 mi (1,063.40 km) |
| Donostia to Ingolstadt | 743.29 mi (1,196.20 km) |
| Donostia to Iserlohn | 715.90 mi (1,152.12 km) |
| Donostia to Isernhagen-Sud | 833.02 mi (1,340.62 km) |
| Donostia to Ismaning | 738.69 mi (1,188.81 km) |
