| Boulder to Kocaali | 6,193.51 mi (9,967.50 km) |
| Boulder to Kocaeli | 6,184.49 mi (9,952.97 km) |
| Boulder to Konak | 6,237.30 mi (10,037.96 km) |
| Boulder to Konakli | 6,485.46 mi (10,437.34 km) |
| Boulder to Konya | 6,426.79 mi (10,342.92 km) |
| Boulder to Koprukoy | 6,534.08 mi (10,515.58 km) |
| Boulder to Korfez | 6,178.06 mi (9,942.63 km) |
| Boulder to Korkut | 6,609.76 mi (10,637.37 km) |
| Boulder to Kose | 6,469.09 mi (10,411.00 km) |
| Boulder to Kovancilar | 6,566.49 mi (10,567.75 km) |
| Boulder to Koyulhisar | 6,419.93 mi (10,331.89 km) |
| Boulder to Kozan | 6,542.34 mi (10,528.88 km) |
| Boulder to Kozlu | 6,195.89 mi (9,971.32 km) |
| Boulder to Kozluk | 6,637.23 mi (10,681.60 km) |
| Boulder to Kucuk Dalyan | 6,626.79 mi (10,664.79 km) |
