| Boulder City to Isny im Allgau | 5,740.93 mi (9,239.14 km) |
| Boulder City to Isselburg | 5,423.63 mi (8,728.49 km) |
| Boulder City to Issum | 5,436.72 mi (8,749.56 km) |
| Boulder City to Itzehoe | 5,408.00 mi (8,703.34 km) |
| Boulder City to Jena | 5,620.08 mi (9,044.65 km) |
| Boulder City to Jever | 5,380.01 mi (8,658.29 km) |
| Boulder City to Jork | 5,432.36 mi (8,742.53 km) |
| Boulder City to Juchen | 5,460.55 mi (8,787.90 km) |
| Boulder City to Julich | 5,464.92 mi (8,794.93 km) |
| Boulder City to Juterbog | 5,606.07 mi (9,022.09 km) |
| Boulder City to Kaarst | 5,458.38 mi (8,784.42 km) |
| Boulder City to Kaiserslautern | 5,581.56 mi (8,982.66 km) |
| Boulder City to Kalkar | 5,422.97 mi (8,727.43 km) |
| Boulder City to Kall | 5,489.08 mi (8,833.82 km) |
| Boulder City to Kaltenkirchen | 5,424.63 mi (8,730.10 km) |
