| Boom to Kidderminster | 296.97 mi (477.92 km) |
| Boom to Kidlington | 248.83 mi (400.46 km) |
| Boom to Kidsgrove | 312.95 mi (503.64 km) |
| Boom to Killamarsh | 285.72 mi (459.83 km) |
| Boom to Killingworth | 367.05 mi (590.71 km) |
| Boom to Kilmarnock | 480.49 mi (773.28 km) |
| Boom to Kilsyth | 483.34 mi (777.86 km) |
| Boom to Kilwinning | 488.79 mi (786.62 km) |
| Boom to King's Lynn | 204.72 mi (329.46 km) |
| Boom to Kings Norton | 284.25 mi (457.46 km) |
| Boom to Kingsnorth | 152.09 mi (244.76 km) |
| Boom to Kingsteignton | 349.43 mi (562.35 km) |
| Boom to Kingston upon Hull | 270.13 mi (434.73 km) |
| Boom to Kingston upon Thames | 203.04 mi (326.76 km) |
| Boom to Kingswinford | 295.67 mi (475.83 km) |
