| South Portland to Kidbrooke | 3,195.02 mi (5,141.89 km) |
| South Portland to Kidderminster | 3,082.88 mi (4,961.41 km) |
| South Portland to Kidlington | 3,133.48 mi (5,042.84 km) |
| South Portland to Kidsgrove | 3,068.99 mi (4,939.06 km) |
| South Portland to Killamarsh | 3,101.51 mi (4,991.40 km) |
| South Portland to Killingworth | 3,059.65 mi (4,924.03 km) |
| South Portland to Kilmarnock | 2,937.90 mi (4,728.09 km) |
| South Portland to Kilsyth | 2,948.99 mi (4,745.94 km) |
| South Portland to Kilwinning | 2,929.35 mi (4,714.34 km) |
| South Portland to King's Lynn | 3,181.04 mi (5,119.39 km) |
| South Portland to Kings Norton | 3,095.46 mi (4,981.65 km) |
| South Portland to Kingsnorth | 3,236.98 mi (5,209.42 km) |
| South Portland to Kingsteignton | 3,066.12 mi (4,934.44 km) |
| South Portland to Kingston upon Hull | 3,131.47 mi (5,039.61 km) |
| South Portland to Kingston upon Thames | 3,182.91 mi (5,122.40 km) |
