Olympic preparations intensify with athletes targeting medal goals while marathon contenders prepare for London race amid health challenges and qualification attempts.

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 with record-breaking performances.

UK Athletics head coach Charles van Commenee expresses confidence that the British team can achieve its eight-medal target at the London Olympics, with comprehensive preparation underway.

UK Athletics commits to purchasing tickets for athletes' friends and families to ensure proper support and attendance at London 2012 Olympic events.

Emmanuel Mutai remains determined to defend his London Marathon title despite recovering from typhoid fever contracted last month, demonstrating resilience ahead of Sunday's race.

Former marathon world record holder Haile Gebrselassie abandons his Olympic dream, ending hopes of competing in the London 2012 marathon.

Guernsey runner Lee Merrien targets Olympic qualification through Sunday's London Marathon, entering the race in peak physical condition as he pursues his Games dream.

Olympic 400m hurdles gold contender Dai Greene announces his Diamond League season opener will take place in Rome on May 31, signaling the start of his competitive campaign.

Haile Gebrselassie defeats Paula Radcliffe in Vienna's half marathon showdown billed as "Emperor versus the Queen," demonstrating continued competitive form despite Olympic withdrawal.

British motorcycle riders intensify their competition for Moto2 and Moto3 titles in 2012, with racing in junior classes expected to rival top-class MotoGP competition intensity.