• Share
  • Tweet
  • Share
Pippa Middleton

FAMEFLYNET PICTURES

It's official: Pippa Middleton is our fall fitness inspiration. 

The English beauty successfully completed the 50-mile Otillo swimming and running event in Stockholm, Sweden on Monday, just one day after Kate Middleton's sister celebrated her 32nd birthday. 

Per People, Middleton rose at 4 a.m. to compete in the 47-mile endurance event, putting her birthday celebrations on hold in order to participate in the competition. She and teammate Jons Bartholdson came in 82nd, completing the race in 3 hours, 4 minutes and 24 seconds while her brother James Middleton and his teammate James Matthews crossed the finish line just eight seconds later. 

PHOTOS: See more pics of Pippa's insane bikini bod

Pippa Middleton

FAMEFLYNET PICTURES

"It was one of the hardest things I've done!" Middleton said after finishing the race, which she participated in in order to raise money for the Michael Matthews Foundation, a charity that was founded following the death of James Matthews' brother, who died while climbing Mount Everest. 

"The toughest part was the long swim with the cold water and big waves. But the scenery was beautiful and I love the team part of it," Pippa, who was seen smiling throughout the race, added. 

Of course, this isn't the first impressive fitness event that Pippa has competed in. She previously completed the Safaricom Marathon in Kenya, Africa in July, a 26.2 mile journey which took place at an altitude of 5,000 feet and just one week prior, the beautiful brunette and her brother teamed up for a 54-mile bike ride from London to Brighton to benefit the British Heart Foundation. 

READ: Find out how Pippa stays fit

**embargoed until 8/29 5am pst Pippa Middleton

Splash News

Prior to her most recent race, Middleton flaunted her killer bikini bod while vacationing in the Caribbean with her brother. 

Clearly, the hard work has paid off in more ways than one! 

PHOTOS: Pippa's best looks