| Boulder to Karahalli | 6,314.95 mi (10,162.93 km) |
| Boulder to Karakocan | 6,556.24 mi (10,551.25 km) |
| Boulder to Karakopru | 6,635.40 mi (10,678.65 km) |
| Boulder to Karaman | 6,488.05 mi (10,441.51 km) |
| Boulder to Karapinar | 6,465.58 mi (10,405.35 km) |
| Boulder to Karatas | 6,584.72 mi (10,597.08 km) |
| Boulder to Karatepe | 6,187.57 mi (9,957.94 km) |
| Boulder to Karayilan | 6,598.25 mi (10,618.86 km) |
| Boulder to Kargipinar | 6,552.13 mi (10,544.63 km) |
| Boulder to Karkamis | 6,637.02 mi (10,681.25 km) |
| Boulder to Karliova | 6,557.21 mi (10,552.81 km) |
| Boulder to Kars | 6,520.70 mi (10,494.06 km) |
| Boulder to Kartal | 6,156.59 mi (9,908.07 km) |
| Boulder to Kas | 6,441.24 mi (10,366.17 km) |
| Boulder to Kastamonu | 6,253.06 mi (10,063.33 km) |
