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William, Duke of Cambridge, Catherine, Duchess of Cambridge, Prince Harry, Kate Middleton

John Stillwell- WPA Pool/Getty Images

The royals continue to show off their charitable side.

Prince William, wife Kate Middleton and brother Prince Harry have decided to donate $150,000 to the Walking With the Wounded South Pole Allied Challenge, an upcoming trek that seeks to raise funds for military charities.

The generous offering comes in the wake of Harry's recent announcement that he himself will be participating in the 208-mile trek to the South Pole this November.

The monthlong race will feature three teams of wounded military personnel from the U.K., U.S. and a combo Australia-Canadian contingent competing against each other. Harry, who's been a patron of the cause since 2011, will reportedly serve as a mentor, camping out with the participants as they endure 50 mph winds and temperatures that can plunge to 50 below zero.

"The Duke and Duchess of Cambridge and Prince Harry are all dedicated to helping our wounded undertake truly great adventures and sporting achievements as part of their recovery," Nick Booth, chief executive of The Royal Foundation, said in a statement. "The Walking With the Wounded South Pole Allied Challenge is a perfect demonstration of the tenacity and resolution of the inspirational men and women who serve both our nation and our allies."

Meanwhile, Harry continues his U.S. tour. Over the weekend, he paid a visit to the U.S. Air Force Training Academy in Colorado Springs, Colo., and also attended the 2013 Warrior Games.