 Born in Vlijmen, Netherlands, Boom has also previously competed for and their junior and continental teams over two spells with the team, as well as .Boom won the cyclo-cross world championships in 2008.He has also been the Dutch national cyclo-cross champion in his discipline from 2001 to 2012 – junior cyclo-cross champion from 2002 to 2003, under-23 champion from 2004 to 2006, and the elite champion from 2007 to 2012.