Their efforts in Wales have seen Team DEStinct, as they have chosen to be known, raise more than £3,000 for the cause.
Team member Ieuan Wilcox, an apprentice in finance, said: “I found completing the challenge very rewarding. I met some great people and it was a huge confidence boost.
“It was incredibly cold at the top of Pen Y Fan and we had little or no sleep but we were determined to finish the challenge and showed the strength of mind and team spirit to get over the finish line.”
DE&S Graduate Liam Roche-Lamerton added: “Reaching the top of the final mountain – Pen Y Fan – was a huge relief and gave us all a real sense of achievement.
“I found it incredibly challenging to go without any hot food so for Bex, a member of the Prince Trust’s team, to deliver us a homemade chilli before the final peak was incredible. It gave the whole team a real boost.”
Team DEStinct have until December 31 to raise the £10,000 required.
You can still donate at www.justgiving.com/teamDEStinct