| Niagara Falls to Kanjiza | 4,536.62 mi (7,300.99 km) |
| Niagara Falls to Kikinda | 4,561.69 mi (7,341.33 km) |
| Niagara Falls to Kladovo | 4,696.73 mi (7,558.66 km) |
| Niagara Falls to Knic | 4,654.12 mi (7,490.08 km) |
| Niagara Falls to Knjazevac | 4,738.73 mi (7,626.24 km) |
| Niagara Falls to Koceljeva | 4,595.02 mi (7,394.97 km) |
| Niagara Falls to Kosjeric | 4,619.41 mi (7,434.23 km) |
| Niagara Falls to Kovacica | 4,599.01 mi (7,401.40 km) |
| Niagara Falls to Kovin | 4,627.78 mi (7,447.70 km) |
| Niagara Falls to Kragujevac | 4,658.53 mi (7,497.18 km) |
| Niagara Falls to Kraljevo | 4,661.33 mi (7,501.69 km) |
| Niagara Falls to Krupanj | 4,582.33 mi (7,374.55 km) |
| Niagara Falls to Krusevac | 4,692.28 mi (7,551.49 km) |
| Niagara Falls to Kucevo | 4,666.16 mi (7,509.45 km) |
| Niagara Falls to Kula | 4,536.61 mi (7,300.96 km) |
