Pippa Middleton Finishes the London To Brighton Bike Ride For British Heart Foundation on June 21, 2015 in Brighton, England
Anthony Harvey—Getty Images
July 2, 2015 2:39 AM EDT

Pippa Middleton is one fierce athlete.

Just one week after competing in a 54-mile charity bike ridealongside her brother James, the super-fit sister of Princess Katehas completed the Safaricom Marathon in Kenya, Africa, PEOPLE confirms exclusively.

The race is a particularly grueling one because of the thinner high-altitude air at more than 5,000 ft. There are two versions – the half and full marathon – and naturally, she opted to do all 26.2 miles, which runs through the Lewa Conservancy.

(The spot has a romantic tie to Kate: Prince William proposed nearby during a 2010 safari.)

Pippa and her friends were raising money for the conservation charity Tusk Trust, of which William is a patron.

“Pippa ran exceptionally well in a very tough marathon, wearing the Tusk cap,” a spokeswoman at Tusk tells PEOPLE. “We are absolutely delighted to have her support.”

It was a record-breaking year for the marathon, as 1,400 runners from about 20 different countries challenged themselves to do the run in temperatures that reached the 80s.

Pippa is not the only royal sibling in Africa, as Prince Harry is also on the continent for his dream job working alongside a veterinarian in Namibia.

Although Harry will miss the christening of his niece, Princess Charlotte, this Sunday, Pippa is expected to attend – and perhaps even score a coveted spot as a godparent.

This article originally appeared on People.com

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