Michael Rimmer made his Olympic debut at the Beijing 2008 Olympic Games. He qualified for the men’s 800 semi-finals and finished sixth.
He emerged in 2006 when winning the AAA Championships at 800m, before finishing eighth in the European Championships final. In 2007, he qualified for the GB team for the World Championships in Osaka, where he made the semi-finals.
In 2010 Rimmer had his best international result to date when he won 800m silver at the European Championships in Barcelona.