Olympic preparations intensify with Bolt's ambitious targets and medal goals set, while London Marathon champions and emerging athletes prepare for major competitions

Usain Bolt has set ambitious goals for the London 2012 Olympics, aiming to run 9.4 seconds in the 100m and 19 seconds in the 200m to "amaze" the world with his performances.

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

UK Athletics will purchase tickets to guarantee that athletes' friends and family members can attend and support them during their performances at the London Olympics.

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

Former marathon world record holder Haile Gebrselassie has decided to abandon his Olympic dream and will not compete in the London 2012 marathon.

Guernsey's Lee Merrien is performing at peak fitness as he prepares to use Sunday's London Marathon as an opportunity to qualify for the Olympics.

Haile Gebrselassie easily defeated Paula Radcliffe in a "Emperor versus the Queen" half marathon showdown held in Vienna on Sunday.

Olympic 400m hurdles gold hopeful Dai Greene has announced that his Diamond League season will begin in Rome on May 31, marking the start of his competitive campaign.

British riders are making a strong push to capture titles in the Moto2 and Moto3 racing classes, with competition outside the top MotoGP class expected to be particularly fierce in 2012.