| Boston to Karahalli | 1,729.75 mi (2,783.77 km) |
| Boston to Karakocan | 2,117.36 mi (3,407.56 km) |
| Boston to Karakopru | 2,148.23 mi (3,457.23 km) |
| Boston to Karaman | 1,927.76 mi (3,102.43 km) |
| Boston to Karapinar | 1,914.83 mi (3,081.62 km) |
| Boston to Karatas | 2,042.47 mi (3,287.03 km) |
| Boston to Karatepe | 1,632.41 mi (2,627.11 km) |
| Boston to Karayilan | 2,068.56 mi (3,329.02 km) |
| Boston to Kargipinar | 1,999.66 mi (3,218.15 km) |
| Boston to Karkamis | 2,133.11 mi (3,432.91 km) |
| Boston to Karliova | 2,141.95 mi (3,447.14 km) |
| Boston to Kars | 2,171.09 mi (3,494.03 km) |
| Boston to Kartal | 1,594.90 mi (2,566.75 km) |
| Boston to Kas | 1,841.03 mi (2,962.85 km) |
| Boston to Kastamonu | 1,756.02 mi (2,826.04 km) |
