| Boulder to Kavak | 6,329.01 mi (10,185.56 km) |
| Boulder to Kayapinar | 6,622.71 mi (10,658.22 km) |
| Boulder to Kayseri | 6,457.19 mi (10,391.84 km) |
| Boulder to Kemalpasa | 6,245.58 mi (10,051.28 km) |
| Boulder to Kemer | 6,445.40 mi (10,372.86 km) |
| Boulder to Keskin | 6,350.47 mi (10,220.09 km) |
| Boulder to Kilimli | 6,195.20 mi (9,970.20 km) |
| Boulder to Kilis | 6,621.47 mi (10,656.22 km) |
| Boulder to Kinik | 6,206.35 mi (9,988.16 km) |
| Boulder to Kirikkale | 6,337.74 mi (10,199.61 km) |
| Boulder to Kirkagac | 6,214.62 mi (10,001.47 km) |
| Boulder to Kirklareli | 6,051.22 mi (9,738.50 km) |
| Boulder to Kirsehir | 6,396.65 mi (10,294.41 km) |
| Boulder to Kizilpinar | 6,099.53 mi (9,816.24 km) |
| Boulder to Kiziltepe | 6,678.56 mi (10,748.11 km) |
