1. Lars Anthonius Johannes Boom was born on 30 December 1985 and is a professional cyclo-cross and mountain bike racing cyclist from the Netherlands.

1. Lars Anthonius Johannes Boom was born on 30 December 1985 and is a professional cyclo-cross and mountain bike racing cyclist from the Netherlands.
Lars Boom has competed professionally in road racing, having raced between 2004 and 2019.
Lars Boom was beaten by Zdenek Stybar in a sprint for the Under 23 World Championships but returned a year later to dominate the race and to win the Under 23 World Champion jersey.
In September 2007, Lars Boom became Under 23 World Time Trial champion beating Russian Mikhail Ignatiev.
In November 2007, Lars Boom won the Gerrit Schulte Trophy as the Dutch cyclist of the year for his two World Championship wins.
Lars Boom went into the world championships in Treviso 2008 as big favourite and did not fail, he won the race and became the second rider after Radomir Simunek to win the world title in all categories.
In 2009 Lars Boom won the Tour of Belgium after a strong performance uphill, and in the final Time Trial.
Lars Boom rode away on the final climb and took the stage, making him the first Dutchman to win a stage in a Grand Tour since 2005.
Lars Boom started the 2010 season by winning the Dutch national cyclocross championships.
Lars Boom won the Dutch Cyclocross Championship for the sixth consecutive time in January 2012, extending his consecutive streak record.
In 2014 Lars Boom won the fifth stage of the Tour de France, a stage marked by difficulty due to wet conditions and significant sections of cobblestones.
Subsequently, Lars Boom announced that he would be leaving Belkin and joining Astana for the 2015 and 2016 seasons.
Lars Boom blamed his asthma inhaler for his low cortisol levels.
In January 2018 Lars Boom had a successful heart surgery to treat a cardiac arrhythmia.
In May 2018, Lars Boom was expelled from the Tour of Norway for aggression against Belgian rider Preben Van Hecke.
Video images showed some kind of incident where Van Hecke had to brake and Lars Boom was upset about this.
Lars Boom overtook Van Hecke and punched him and attacked his helmet during the race.
Lars Boom was a directeur sportif for UCI Women's World Tour team Liv Racing for the 2021 season and for SD Worx in 2022.