| Boulder City to Jozefow | 5,808.55 mi (9,347.96 km) |
| Boulder City to Kalisz | 5,751.67 mi (9,256.42 km) |
| Boulder City to Kamien Pomorski | 5,546.33 mi (8,925.95 km) |
| Boulder City to Kamienna Gora | 5,751.49 mi (9,256.12 km) |
| Boulder City to Karczew | 5,811.80 mi (9,353.19 km) |
| Boulder City to Kartuzy | 5,611.97 mi (9,031.60 km) |
| Boulder City to Katowice | 5,858.80 mi (9,428.84 km) |
| Boulder City to Kedzierzyn-Kozle | 5,832.89 mi (9,387.12 km) |
| Boulder City to Kepno | 5,775.47 mi (9,294.71 km) |
| Boulder City to Ketrzyn | 5,700.86 mi (9,174.65 km) |
| Boulder City to Kety | 5,884.54 mi (9,470.25 km) |
| Boulder City to Kielce | 5,865.56 mi (9,439.71 km) |
| Boulder City to Kielczow | 5,762.39 mi (9,273.66 km) |
| Boulder City to Klobuck | 5,820.29 mi (9,366.86 km) |
| Boulder City to Klodzko | 5,787.17 mi (9,313.55 km) |
