| Boston to Kidderminster | 101.70 mi (163.66 km) |
| Boston to Kidlington | 95.86 mi (154.27 km) |
| Boston to Kidsgrove | 92.84 mi (149.41 km) |
| Boston to Killamarsh | 58.58 mi (94.27 km) |
| Boston to Killingworth | 155.22 mi (249.81 km) |
| Boston to Kilmarnock | 256.33 mi (412.52 km) |
| Boston to Kilsyth | 263.39 mi (423.89 km) |
| Boston to Kilwinning | 264.31 mi (425.37 km) |
| Boston to King's Lynn | 23.18 mi (37.30 km) |
| Boston to Kings Norton | 88.90 mi (143.07 km) |
| Boston to Kingsnorth | 133.62 mi (215.05 km) |
| Boston to Kingsteignton | 226.92 mi (365.20 km) |
| Boston to Kingston upon Hull | 54.75 mi (88.12 km) |
| Boston to Kingston upon Thames | 108.68 mi (174.91 km) |
| Boston to Kingswinford | 95.54 mi (153.75 km) |
