If the Sport Relief celebrities can ride half the distance - challenge yourself to cycle the full route from Lands End to John O'Groats.

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Cycle for Action Medical Research in 2011 and help us raise crucial money for medical research.

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Action Medical Research - Alfie's story - What is the youngest age you can have a stroke?

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Silver-tongued Sport Relief superstar David Walliams proves he could sell ice to the Eskimos as he gathers his celeb team for the BT Sport Relief Million Pound Bike Ride.

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Newsreader & presenter Dermot Murnaghan joined the 2011 UKEND2END cyclists on the challenge and these are his thoughts.

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