| Boulder to Brzesko | 5,405.89 mi (8,699.94 km) |
| Boulder to Brzeszcze | 5,362.39 mi (8,629.94 km) |
| Boulder to Brzeziny | 5,284.35 mi (8,504.33 km) |
| Boulder to Brzozow | 5,459.38 mi (8,786.02 km) |
| Boulder to Bukowno | 5,357.20 mi (8,621.58 km) |
| Boulder to Busko-Zdroj | 5,381.97 mi (8,661.44 km) |
| Boulder to Bydgoszcz | 5,167.09 mi (8,315.62 km) |
| Boulder to Bystrzyca Klodzka | 5,273.95 mi (8,487.61 km) |
| Boulder to Bytom | 5,337.34 mi (8,589.62 km) |
| Boulder to Bytow | 5,101.35 mi (8,209.83 km) |
| Boulder to Chelm | 5,420.95 mi (8,724.17 km) |
| Boulder to Chelmek | 5,359.11 mi (8,624.65 km) |
| Boulder to Chelmno | 5,166.89 mi (8,315.31 km) |
| Boulder to Chelmza | 5,180.37 mi (8,337.00 km) |
| Boulder to Chodziez | 5,143.67 mi (8,277.94 km) |
