| Rank | Country | dual gauge | Railways |
| Belarus | | total: 5,537 km broad gauge: 5,512 km 1.520-m gauge (874 km electrified) standard gauge: 25 km 1.435-m gauge (2010) |
| Belgium | | total: 3,233 km standard gauge: 3,233 km 1.435-m gauge (2,950 km electrified) (2010) |
| Belize | | void |
| Benin | | total: 438 km narrow gauge: 438 km 1.000-m gauge (2010) |
| Bermuda | | void |
| Bhutan | | void |
| Bolivia | | total: 3,652 km narrow gauge: 3,652 km 1.000-m gauge (2010) |
| Bosnia and Herzegovina | | total: 601 km standard gauge: 601 km 1.435-m gauge (392 km electrified) (2009) |
| Botswana | | total: 888 km narrow gauge: 888 km 1.067-m gauge (2010) |
| Bouvet Island | | void |
| Brazil | | total: 28,538 km broad gauge: 5,627 km 1.600-m gauge (467 km electrified) standard gauge: 194 km 1.440-m gauge narrow gauge: 22,717 km 1.000-m gauge (2010) |
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This page was last updated on 2 February, 2012 |
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