| Luton to Kidbrooke | 34.43 mi (55.42 km) |
| Luton to Kidderminster | 85.41 mi (137.45 km) |
| Luton to Kidlington | 37.59 mi (60.50 km) |
| Luton to Kidsgrove | 113.70 mi (182.98 km) |
| Luton to Killamarsh | 106.52 mi (171.42 km) |
| Luton to Killingworth | 222.88 mi (358.69 km) |
| Luton to Kilmarnock | 307.01 mi (494.08 km) |
| Luton to Kilsyth | 319.75 mi (514.59 km) |
| Luton to Kilwinning | 314.13 mi (505.55 km) |
| Luton to King's Lynn | 69.56 mi (111.95 km) |
| Luton to Kings Norton | 73.81 mi (118.79 km) |
| Luton to Kingsnorth | 75.99 mi (122.29 km) |
| Luton to Kingsteignton | 165.62 mi (266.54 km) |
| Luton to Kingston upon Hull | 128.98 mi (207.57 km) |
| Luton to Kingston upon Thames | 32.71 mi (52.64 km) |
