| Middlesbrough to Krosno Odrzanskie | 695.20 mi (1,118.81 km) |
| Middlesbrough to Krotoszyn | 796.71 mi (1,282.17 km) |
| Middlesbrough to Kruszwica | 809.60 mi (1,302.93 km) |
| Middlesbrough to Krynica | 1,004.05 mi (1,615.86 km) |
| Middlesbrough to Krzeszowice | 928.49 mi (1,494.26 km) |
| Middlesbrough to Kudowa-Zdroj | 785.98 mi (1,264.91 km) |
| Middlesbrough to Kutno | 860.64 mi (1,385.07 km) |
| Middlesbrough to Kwidzyn | 815.16 mi (1,311.88 km) |
| Middlesbrough to Lancut | 1,033.33 mi (1,662.98 km) |
| Middlesbrough to Lapy | 985.89 mi (1,586.63 km) |
| Middlesbrough to Lask | 866.78 mi (1,394.95 km) |
| Middlesbrough to Laziska Gorne | 897.18 mi (1,443.88 km) |
| Middlesbrough to Lebork | 758.25 mi (1,220.29 km) |
| Middlesbrough to Leczna | 1,024.06 mi (1,648.07 km) |
| Middlesbrough to Leczyca | 858.18 mi (1,381.10 km) |
