Olympic preparations intensify with athlete support measures while marathon champions face health challenges ahead of major spring events

Usain Bolt sets ambitious targets for London 2012 Olympics, aiming to run 9.4 seconds in the 100m and 19 seconds in the 200m to "amaze" the world at the Games.

UK Athletics head coach Charles van Commenee expresses confidence that the British squad can achieve their eight-medal target at the London Olympics.

UK Athletics announces it will purchase tickets to guarantee that athletes' friends and families can attend and watch performances at the London Olympics.

Emmanuel Mutai remains determined to defend his London Marathon title despite recovering from typhoid contracted last month, competing this Sunday.

Haile Gebrselassie abandons his Olympic dream and will not compete in the London 2012 marathon, marking the end of his Olympic aspirations.

Gebrselassie defeats Paula Radcliffe in Vienna's "Emperor versus the Queen" half marathon, demonstrating strong form in the lead-up to spring racing.

Guernsey athlete Lee Merrien prepares to compete in Sunday's London Marathon, attempting to qualify for the Olympics while in peak form.

Olympic 400m hurdles gold contender Dai Greene confirms his Diamond League season will launch in Rome on May 31st.

British riders pursue Moto2 and Moto3 titles in the 2012 season as motorcycle racing outside the top class promises fierce competition.