Pippa Middleton to Ski in Swedish Marathon

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Pippa Middleton will get the chance to show off her athletic skills once again when she puts on skis for a cross-country charity race this Sunday.

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The 28-year-old sister of Kate -- the Duchess of Cambridge -- will trek 56 miles in the traditional cross-country marathon in Sweden, the Associated Press reports. Pippa is an avid runner and has even participated in a triathlon competition.

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Pippa's brother James will also take part in the race -- called the Vasaloppet -- which raises money for the child hunger charity Magic Breakfast. According to AP, about 16,000 people took part in last year's event.