| Boulder City to Karditsa | 6,558.39 mi (10,554.71 km) |
| Boulder City to Kastoria | 6,473.27 mi (10,417.72 km) |
| Boulder City to Katerini | 6,523.72 mi (10,498.92 km) |
| Boulder City to Keratsini | 6,689.57 mi (10,765.83 km) |
| Boulder City to Kerkyra | 6,483.50 mi (10,434.18 km) |
| Boulder City to Kiato | 6,661.32 mi (10,720.35 km) |
| Boulder City to Kifisia | 6,688.66 mi (10,764.36 km) |
| Boulder City to Kilkis | 6,492.85 mi (10,449.23 km) |
| Boulder City to Komotini | 6,556.81 mi (10,552.16 km) |
| Boulder City to Korinthos | 6,670.77 mi (10,735.56 km) |
| Boulder City to Koropi | 6,701.00 mi (10,784.21 km) |
| Boulder City to Korydallos | 6,689.59 mi (10,765.85 km) |
| Boulder City to Kos | 6,859.03 mi (11,038.54 km) |
| Boulder City to Kozani | 6,500.89 mi (10,462.18 km) |
| Boulder City to Lagos | 6,548.14 mi (10,538.21 km) |
