Last summer, renowned comedian Eddie Izzard completed the ultimate human endurance challenge for Sport Relief – completing a staggering 43 marathons in 51 days around the UK. This inspiring three-part documentary follows Eddie’s epic adventure.

Eddie Iz Running looks at how he managed to successfully complete this gruelling feat after just five weeks of training. Covering a mind-blowing 1,166 miles, the documentary looks at what drove Eddie and the physical and mental strain of running consecutive marathons – during which he gained blisters upon blisters, lost toenails, suffered from insomnia, took much-needed ice baths, rotated seven pairs of trainers and ate more than 6,000 calories a day in order to complete his challenge.

Along the way, Eddie was joined and supported by celebrities including Frank Skinner and Denise Van Outen in Edinburgh, and Ben Shepherd and Emma Crosby who joined him on his triumphant return to London.

Thursday 4 March
10.30-11.30pm BBC THREE