| Niagara Falls to Kidbrooke | 3,566.66 mi (5,739.99 km) |
| Niagara Falls to Kidderminster | 3,452.44 mi (5,556.17 km) |
| Niagara Falls to Kidlington | 3,504.89 mi (5,640.57 km) |
| Niagara Falls to Kidsgrove | 3,434.76 mi (5,527.71 km) |
| Niagara Falls to Killamarsh | 3,464.92 mi (5,576.25 km) |
| Niagara Falls to Killingworth | 3,413.50 mi (5,493.50 km) |
| Niagara Falls to Kilmarnock | 3,291.20 mi (5,296.68 km) |
| Niagara Falls to Kilsyth | 3,299.57 mi (5,310.14 km) |
| Niagara Falls to Kilwinning | 3,282.58 mi (5,282.80 km) |
| Niagara Falls to King's Lynn | 3,545.50 mi (5,705.93 km) |
| Niagara Falls to Kings Norton | 3,464.55 mi (5,575.65 km) |
| Niagara Falls to Kingsnorth | 3,609.29 mi (5,808.60 km) |
| Niagara Falls to Kingsteignton | 3,446.70 mi (5,546.92 km) |
| Niagara Falls to Kingston upon Hull | 3,491.38 mi (5,618.83 km) |
| Niagara Falls to Kingston upon Thames | 3,555.23 mi (5,721.58 km) |
