| Sliven to Idstein | 1,001.20 mi (1,611.27 km) |
| Sliven to Illertissen | 873.20 mi (1,405.28 km) |
| Sliven to Illingen | 1,030.05 mi (1,657.71 km) |
| Sliven to Ilmenau | 913.17 mi (1,469.60 km) |
| Sliven to Ilsede | 999.59 mi (1,608.68 km) |
| Sliven to Ilsenburg | 966.35 mi (1,555.18 km) |
| Sliven to Ilsfeld | 929.27 mi (1,495.52 km) |
| Sliven to Ilvesheim | 968.74 mi (1,559.04 km) |
| Sliven to Immenstadt im Allgau | 852.98 mi (1,372.75 km) |
| Sliven to Ingelheim | 1,003.19 mi (1,614.47 km) |
| Sliven to Ingolstadt | 830.71 mi (1,336.89 km) |
| Sliven to Iserlohn | 1,060.08 mi (1,706.04 km) |
| Sliven to Isernhagen-Sud | 1,017.50 mi (1,637.51 km) |
| Sliven to Ismaning | 805.34 mi (1,296.07 km) |
| Sliven to Isny im Allgau | 863.46 mi (1,389.60 km) |
