| Niksar to Idar-Oberstein | 1,563.48 mi (2,516.18 km) |
| Niksar to Idstein | 1,530.21 mi (2,462.64 km) |
| Niksar to Illertissen | 1,418.92 mi (2,283.54 km) |
| Niksar to Illingen | 1,570.15 mi (2,526.91 km) |
| Niksar to Ilmenau | 1,428.18 mi (2,298.43 km) |
| Niksar to Ilsede | 1,496.26 mi (2,408.00 km) |
| Niksar to Ilsenburg | 1,466.27 mi (2,359.73 km) |
| Niksar to Ilsfeld | 1,468.44 mi (2,363.23 km) |
| Niksar to Ilvesheim | 1,505.04 mi (2,422.13 km) |
| Niksar to Immenstadt im Allgau | 1,404.29 mi (2,259.98 km) |
| Niksar to Ingelheim | 1,535.37 mi (2,470.94 km) |
| Niksar to Ingolstadt | 1,367.80 mi (2,201.26 km) |
| Niksar to Iserlohn | 1,577.50 mi (2,538.75 km) |
| Niksar to Isernhagen-Sud | 1,513.35 mi (2,435.51 km) |
| Niksar to Ismaning | 1,347.71 mi (2,168.93 km) |
