| Boulder City to Kamen | 5,471.49 mi (8,805.51 km) |
| Boulder City to Kamenz | 5,672.84 mi (9,129.55 km) |
| Boulder City to Kamp-Lintfort | 5,441.96 mi (8,757.98 km) |
| Boulder City to Kandel | 5,613.05 mi (9,033.34 km) |
| Boulder City to Kappeln | 5,382.17 mi (8,661.77 km) |
| Boulder City to Karben | 5,572.65 mi (8,968.31 km) |
| Boulder City to Karlsdorf-Neuthard | 5,621.04 mi (9,046.20 km) |
| Boulder City to Karlsfeld | 5,757.59 mi (9,265.95 km) |
| Boulder City to Karlsruhe | 5,623.12 mi (9,049.53 km) |
| Boulder City to Kassel | 5,539.55 mi (8,915.04 km) |
| Boulder City to Kaufbeuren | 5,749.30 mi (9,252.60 km) |
| Boulder City to Kaufering | 5,746.78 mi (9,248.55 km) |
| Boulder City to Kaufungen | 5,544.85 mi (8,923.57 km) |
| Boulder City to Kehl | 5,626.95 mi (9,055.70 km) |
| Boulder City to Kelheim | 5,733.06 mi (9,226.46 km) |
