| Niagara Falls to Glyka Nera | 5,043.68 mi (8,117.02 km) |
| Niagara Falls to Grevena | 4,850.73 mi (7,806.49 km) |
| Niagara Falls to Ialysos | 5,290.95 mi (8,514.96 km) |
| Niagara Falls to Ilion | 5,035.75 mi (8,104.25 km) |
| Niagara Falls to Ilioupoli | 5,042.38 mi (8,114.93 km) |
| Niagara Falls to Ioannina | 4,846.20 mi (7,799.21 km) |
| Niagara Falls to Irakleio | 5,219.92 mi (8,400.65 km) |
| Niagara Falls to Irakleio | 5,037.68 mi (8,107.37 km) |
| Niagara Falls to Kaisariani | 5,041.11 mi (8,112.88 km) |
| Niagara Falls to Kalamaria | 4,889.29 mi (7,868.55 km) |
| Niagara Falls to Kalamata | 5,016.25 mi (8,072.88 km) |
| Niagara Falls to Kallithea | 5,039.58 mi (8,110.43 km) |
| Niagara Falls to Kalymnos | 5,216.97 mi (8,395.90 km) |
| Niagara Falls to Kalyvia Thorikou | 5,053.76 mi (8,133.25 km) |
| Niagara Falls to Kamatero | 5,035.02 mi (8,103.08 km) |
