At the start of this century Lars Boom made a spectacular entrance into the world of cycling. As a young cyclo-crosser he soon became the terror of the Belgian cross enclave. Riders as Sven Nys could at times barely keep up with the talented Dutchman. In 2008 Boom achieved his greatest triumph until then. In the Italian city of Treviso he became world champion cyclo-cross. Throughout his career he always had combined the field with the road. After his success in the mud, it was only a matter of time before he started to shifting his focus. At Rabobank he found a new challenge and on the road Boom is now again to be found at the front regularly. Prologues and time trials are his specialty, but one day races also suit him. In 2008 he became Dutch road champion, while in 2012 he finished sixth in Paris-Roubaix and fifth at the World Championships in Limburg. The overall victory in the Eneco Tour (WorldTour) was the icing on the cake for Boom. Between all the road races he also returns to cyclo-crossing now and then. Since 2007 he successfully defended his national title five times in a row.