Filmed over four years, Personal Best follows up-and-coming British sprinters on their journey from the grassroots of athletics to the international stage. The film is both a gripping portrait of the athletes in training and competition, and a deeply personal account of their lives unfolding - revealing victory, defeat, agony, ecstasy and the simple trials of growing up. On the eve of the 2012 Olympics, this film tells the stories of Britain's young sprinters as they strive towards their dreams. This is an inspiring but genuine portrait of Britain's youth and a penetrating study of the art of sprinting, peeling back the layers so we can finally understand everything it means to them as they wait on the start line for the gun to fire.