| Boulder City to Kluczbork | 5,798.14 mi (9,331.21 km) |
| Boulder City to Knurow | 5,852.94 mi (9,419.40 km) |
| Boulder City to Kobylka | 5,796.35 mi (9,328.32 km) |
| Boulder City to Kokoszki | 5,617.83 mi (9,041.03 km) |
| Boulder City to Kolbuszowa | 5,929.22 mi (9,542.16 km) |
| Boulder City to Kolno | 5,751.95 mi (9,256.87 km) |
| Boulder City to Kolo | 5,741.08 mi (9,239.37 km) |
| Boulder City to Kolobrzeg | 5,555.75 mi (8,941.11 km) |
| Boulder City to Koluszki | 5,795.36 mi (9,326.73 km) |
| Boulder City to Komorniki | 5,688.18 mi (9,154.24 km) |
| Boulder City to Konin | 5,730.94 mi (9,223.05 km) |
| Boulder City to Konskie | 5,841.71 mi (9,401.32 km) |
| Boulder City to Konstancin-Jeziorna | 5,808.60 mi (9,348.04 km) |
| Boulder City to Konstantynow Lodzki | 5,783.74 mi (9,308.04 km) |
| Boulder City to Koronowo | 5,661.68 mi (9,111.59 km) |
