Michael Raelert won the national championships on the olympic distance at the Alpen-Triathlon in Schliersee in 2005. Three years later he repeated his victory in Schliersee. In 2009 Michael moved over to the half Ironman distance.
In November 2009 he reached his first international title on this distance winning the World Championships in Clearwater (Florida) with a new race record. In 2010 Michael remained unbeaten over the Ironman 70.3 distance. In August 2010 he crowned this series of victories at the Ironman 70.3 European Championships in Wiesbaden: He set a new course record on his way to the title.
Three months later, the european champion defended his title in Clearwater with an impressive race and claimed the title as the Ironman 70.3 World Champion again. It was a victory, which marked his name in the history book of triathlon.
He made his Ironman debut 2012 at Ironman Regensburg. In 2012 he celebrated the title at the Ironman 70.3 European Championships in Wiesbaden again – with a new race record.