| Boulder to Kidbrooke | 4,686.77 mi (7,542.63 km) |
| Boulder to Kidderminster | 4,570.71 mi (7,355.85 km) |
| Boulder to Kidlington | 4,626.53 mi (7,445.68 km) |
| Boulder to Kidsgrove | 4,542.91 mi (7,311.11 km) |
| Boulder to Killamarsh | 4,565.20 mi (7,346.98 km) |
| Boulder to Killingworth | 4,488.97 mi (7,224.29 km) |
| Boulder to Kilmarnock | 4,370.62 mi (7,033.83 km) |
| Boulder to Kilsyth | 4,371.10 mi (7,034.61 km) |
| Boulder to Kilwinning | 4,362.17 mi (7,020.23 km) |
| Boulder to King's Lynn | 4,645.62 mi (7,476.40 km) |
| Boulder to Kings Norton | 4,581.02 mi (7,372.43 km) |
| Boulder to Kingsnorth | 4,729.86 mi (7,611.97 km) |
| Boulder to Kingsteignton | 4,596.82 mi (7,397.87 km) |
| Boulder to Kingston upon Hull | 4,580.64 mi (7,371.83 km) |
| Boulder to Kingston upon Thames | 4,677.68 mi (7,528.01 km) |
