is passionate, and a true student of his discipline, having written a 10,000-word dissertation on hurdling while at university in Cardiff. He has also studied hours of footage of greats such as the Dominican 2004 Olympic Champion Félix Sánchez and the legendary

over the 200m, breaking three hours for the first time with the road marathon and finishing my first marathon in 2004, are just a few. Hopefully London 2012 will be the highlight of my career so far.The Olympic moment I remember most was Kelly Holmes

was great and got me to a really good place, but Alberto has just given me that bit extra.So how has your training changed?Alberto is known for his unusual training methods. I do a lot of running on a HydroWorx underwater treadmill, and on an AlterG anti

Mark Kleanthous is a founder member of the British Triathlon Association and member of the Great Britain triathlon team. Over the past 30 years, Mark has completed 71 marathons in under three hours and finished more than 420 triathlons, including 31