| Niagara Falls to Klaukkala | 4,108.73 mi (6,612.37 km) |
| Niagara Falls to Kokkola | 3,934.65 mi (6,332.20 km) |
| Niagara Falls to Kontiolahti | 4,148.37 mi (6,676.16 km) |
| Niagara Falls to Korsholm | 3,922.22 mi (6,312.20 km) |
| Niagara Falls to Kotka | 4,166.36 mi (6,705.11 km) |
| Niagara Falls to Kouvola | 4,143.59 mi (6,668.46 km) |
| Niagara Falls to Kuhmo | 4,084.08 mi (6,572.70 km) |
| Niagara Falls to Kuopio | 4,087.99 mi (6,578.99 km) |
| Niagara Falls to Kurikka | 3,959.47 mi (6,372.15 km) |
| Niagara Falls to Kuusamo | 4,002.05 mi (6,440.68 km) |
| Niagara Falls to Kuusankoski | 4,139.77 mi (6,662.31 km) |
| Niagara Falls to Lahti | 4,110.10 mi (6,614.57 km) |
| Niagara Falls to Laitila | 4,003.41 mi (6,442.86 km) |
| Niagara Falls to Lapinlahti | 4,061.57 mi (6,536.46 km) |
| Niagara Falls to Lappeenranta | 4,175.51 mi (6,719.83 km) |
