Lars Anthonius Johannes Boom is a professional cyclocross and road racing cyclist who was born in Vlijmen, Netherlands. Boom rides for UCI ProTeam Astana, having previously ridden for Rabobank and the junior and continental teams. Boom won the cyclocross world championships in 2008. He has also been the Dutch national cyclocross champion in his discipline from 2001 to 2012160 junior cyclocross champion from 2002 to 2003, U23 champion from 2004 to 2006, and the elite champion from 2007 to 2012.
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Source: Wikipedia