Pippa says cycling marathon was 'brilliant'

Pippa Middleton and her brother James Middleton finished their marathon cycle across the U.S. in Annapolis, Maryland on June 22.

30-year-old Pippa and James, 27, endured a 3,000 mile, six day challenge and relaxed with their group during a stroll along the waterfront in Annapolis.

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The younger sister of the Duchess of Cambridge opened up about her "brilliant" experience and said: "The hardest thing was the sheer endurance of it and not getting enough sleep. We averaged about three hours a night."

When asked if she suffered any saddle sores she joked: "It wasn't too bad. I think it was because I chose a particularly comfy saddle."

Pippa and James were all smiles after finishing the race on June 20. Source: WireImage

While she didn't experience any battle wounds, she admitted it was scary riding at night. She explained: "I found cycling at night quite intimidating. There was a few nights when we came across snakes, skunks and deer."

She also revealed her legs were sore in the beginning and admitted: "They were a bit wobbly at first but then I got used to it."

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Pippa's team raised money for the British Heart Foundation, with her JustGiving page reaching $9,188.

According to the site, Pippa is already gearing up for her next challenge in Istanbul for the Bosphorus Cross-Continental Race.