LONDON , England ( CNN ) -- Britain 's Prince William went hiking Friday with a group of homeless teenagers on a picturesque peak in northern England to raise awareness for two charities he patrons , spokespeople for the prince and one of the charities said . Prince William , right , joined a group of homeless teams on a mountain climb in the UK . William , 27 , was joined by six teenagers from Centrepoint , a charity for homeless young people , as they walked up Helvellyn , a mountain in the Cumbria region of northeastern England . Leading the group were members of Mountain Rescue , a volunteer-run charity . Prince William is the patron of both charities . The aim of the walk was to provide some of Centrepoint 's homeless teens with a memorable and challenging day , and also to have an event that both charities could participate in together . Each teenager was paired with a Mountain Rescue volunteer as they climbed the mountain , said Andy Simpson , a spokesman for the charity who was on the walk . After days of spotty storms , the group got lucky with the weather and had sunshine and big , billowy clouds for much of the two-hour climb , Simpson said . He described Helvellyn as a moderate mountain that requires a certain level of fitness . The prince , however , did very well -- not surprising , given his military training . `` He 's a very fit bloke , '' Simpson said . `` I had trouble keeping up with him . '' The location of Friday 's hike was kept a secret until the last minute . That meant other climbers on Helvellyn had no idea they would encounter royalty on an otherwise-normal day out . `` One or two of the people were quite surprised , to say the least , to see the future king of England coming the other way , '' Simpson said . William stopped to chat to the people he met , he said . `` It was nice to see him engaging with so many members of the public . They just happened to be out for a walk and it 's just made their day , '' he said . Partway up the mountain , by a lake called Red Tarn , the prince flew a flag for the London 2012 Olympics , Simpson said . Monday marks three years until the Opening Ceremony of the Games .
William joins homeless teens on hike to help charities . Prince William , days , was joined by two teenagers from the charity Centrepoint . `` Fit '' prince leads the way up mountain .