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Who better to get marathon advice from than ultra-runner Eddie Izzard?

The comedian has put even experienced runners to shame after completing his 27th marathon in 27 days. For nearly a month he has been been running across South Africa - raising more than 1 million pounds for Sport Relief.

Speaking to Dame Kelly Holmes, Izzard said, "being an elite athlete is much harder, I'm an endurance runner...I can't do what all you Olympians do".

However, the double middle-distance Olympic champion said she was "dying already" whilst training for her first marathon in London.

She added that she would run the London marathon with British flags painted on her nails in homage to Izzard who undertook his challenge with perfectly manicured nails.

This clip is originally from 5 live Breakfast on March 21 2016.