Helen Skelton
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Helen Skelton's Sport Relief challenge announced

13 December 2011 Last updated at 08:43 GMT

Blue Peter's Helen Skelton is not one to turn down a challenge for Sport Relief and this year is no different.

She is about to attempt to become the first person reach the south pole using skis, kites and even a bike to get there.

She'll travel the 500 miles across Antarctica, battling icy winds and temperatures that can plummet to as low as -50C . She'll be pulling her own sledge that will weigh up to 13 stone, containing all the food and equipment she will need for her journey.