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MORA, Sweden (AP) -- Pippa Middleton has completed a 56-mile cross-country ski marathon in Sweden — taking a respectable 412th place in the women's category.

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The sister of the Duchess of Cambridge — the former Kate Middleton — finished the Vasaloppet ski race in 7 hours, 13:36 minutes, alongside 15,800 competitors in bright sunshine.

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Middleton told Swedish broadcaster SVT she had only prepared for the race for "a couple of weekends" and admitted it was tiring.

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Pippa and her brother James, who clocked 06:47:27, raced to raise money for children's charity Magic Breakfast.

The competition is one of the world's oldest cross-country races and is based on Gustav Vasa's attempt to gather peasants for a revolt against occupying Danes in 1522.

The winner finished in 3 hours, 38.41 minutes.