Olympic athletes prepare for London 2012 while marathon runners target title defenses and qualification goals ahead of Sunday's London Marathon.

Usain Bolt aims to set world records at London 2012 Olympics, targeting 9.4 seconds in the 100m and 19 seconds in the 200m to "amaze" the world with historic performances.

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

UK Athletics will purchase tickets to guarantee that Olympic athletes' friends and families can attend and watch their performances at London 2012.

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

Legendary runner Haile Gebrselassie abandons his Olympic dream and will not compete in the London 2012 marathon, marking the end of an era for the former world record holder.

Guernsey's Lee Merrien is in peak form heading into Sunday's London Marathon, where he will attempt to qualify for the Olympics.

Olympic 400m hurdles gold hopeful Dai Greene confirms his Diamond League season will commence in Rome on May 31, signaling his preparation for summer championships.

Haile Gebrselassie defeats Paula Radcliffe in a Vienna half marathon dubbed "Emperor versus the Queen," showcasing his continued competitive prowess in distance running.

British riders are positioned to make a strong challenge for titles in Moto2 and Moto3 categories during the 2012 MotoGP season, intensifying competition outside the top class.