Olympic preparations intensify with Bolt's ambitious targets and UK team medal aims, while marathon season heats up with Mutai defending his title and Gebrselassie stepping back

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

UK Athletics head coach Charles van Commenee expresses confidence that the British team can achieve its target of eight medals at the London Olympics.

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

Emmanuel Mutai is determined to defend his London Marathon title on Sunday despite recovering from typhoid fever contracted last month.

Marathon legend Haile Gebrselassie abandons his Olympic dream and will not compete in the London 2012 marathon.

Guernsey's Lee Merrien is in peak form heading into Sunday's London Marathon, aiming to qualify for the Olympics in the process.

Olympic 400m hurdles hopeful Dai Greene confirms his Diamond League season will begin in Rome on May 31, signaling his return to competition.

Haile Gebrselassie decisively defeats Paula Radcliffe in Vienna's "Emperor versus the Queen" half marathon matchup.

British riders are positioning themselves to compete for titles in the Moto2 and Moto3 classes during the 2012 MotoGP season.