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Pippa Middleton, Triathlon 2011

Chris Brunskill/Getty Images

Nothing can stop Pippa Middleton

The 31-year-old English socialite was the epitome of #FitnessGoals over the weekend when she completed the Safaricom Marathon in Kenya, Africa, People confirmed. The 26.2 mile journey wasn't your average walk in the park though, as Middleton was tasked with handling the scorching East African heat and exhausting high-altitude air at more than 5,000 feet. 

And to top it all off, Kate Middleton's younger sis ran the marathon to fund raise for the conservation charity Tusk Trust, of which her brother-in-law Prince William is a patron. 

Pippa Middleton, James Middleton

Anthony Harvey/Getty Images

And just last week, the beautiful brunette traded her trainers for a bicycle when she teamed up with brother James Middleton for a 54-mile bike ride from London to Brighton to benefit the British Heart Foundation. 

"I'm passionate about raising awareness amongst women of this killer disease and I look forward to working with the BHF to highlight to women the risks of heart disease and importantly, how they can reduce them," Pippa shared.  

Back in 2012, the dynamic duo also raced in a 56-mile cross-country ski marathon across Swedish mountains to alleviate hunger for British children. 

Athletic and philanthropic...now that's quite the impressive combination!