| Middlesbrough to Iver | 213.28 mi (343.24 km) |
| Middlesbrough to Ivybridge | 310.57 mi (499.81 km) |
| Middlesbrough to Jarrow | 29.74 mi (47.87 km) |
| Middlesbrough to Johnstone | 155.37 mi (250.04 km) |
| Middlesbrough to Kearsley | 85.72 mi (137.95 km) |
| Middlesbrough to Keighley | 56.12 mi (90.31 km) |
| Middlesbrough to Kempston | 172.86 mi (278.19 km) |
| Middlesbrough to Kendal | 63.06 mi (101.49 km) |
| Middlesbrough to Kenilworth | 155.07 mi (249.56 km) |
| Middlesbrough to Kenley | 229.66 mi (369.61 km) |
| Middlesbrough to Kensington | 216.96 mi (349.17 km) |
| Middlesbrough to Kenton | 210.06 mi (338.06 km) |
| Middlesbrough to Kettering | 152.34 mi (245.16 km) |
| Middlesbrough to Kew Green | 214.59 mi (345.35 km) |
| Middlesbrough to Keynsham | 224.75 mi (361.70 km) |
