| Middlesbrough to Kinston (North Carolina) | 3,758.31 mi (6,048.41 km) |
| Middlesbrough to Kirkland (Washington) | 4,580.90 mi (7,372.25 km) |
| Middlesbrough to Kirksville (Missouri) | 4,073.85 mi (6,556.23 km) |
| Middlesbrough to Kirkwood (Missouri) | 4,078.50 mi (6,563.71 km) |
| Middlesbrough to Kiryas Joel (New York) | 3,333.13 mi (5,364.15 km) |
| Middlesbrough to Kissimmee (Florida) | 4,266.12 mi (6,865.66 km) |
| Middlesbrough to Klamath Falls (Oregon) | 4,889.28 mi (7,868.54 km) |
| Middlesbrough to Knightdale (North Carolina) | 3,767.80 mi (6,063.68 km) |
| Middlesbrough to Knik-Fairview (Alaska) | 4,233.15 mi (6,812.60 km) |
| Middlesbrough to Knoxville (Tennessee) | 3,969.02 mi (6,387.52 km) |
| Middlesbrough to Kokomo (Indiana) | 3,826.53 mi (6,158.21 km) |
| Middlesbrough to Kuna (Idaho) | 4,666.54 mi (7,510.08 km) |
| Middlesbrough to Kyle (Texas) | 4,806.11 mi (7,734.68 km) |
| Middlesbrough to La Cañada Flintridge (California) | 5,255.66 mi (8,458.16 km) |
| Middlesbrough to La Crescenta-Montrose (California) | 5,255.41 mi (8,457.76 km) |
