Army cadet Ellery Smith, from Skegness, has won selection to take part in a six week camp in the northern Canadian territory of Yukon.
Ellery, 16, is one of a group of 12 chosen from hundreds of UK candidates to take part in Exercise Whitehorse.
A member of Lincolnshire Army Cadet force, Ellery completed an interview and fitness test to win selection.
The UK group will join 120 cadets from Canada on the expedition.
Ellery was given a canvas map of historic Skegness by Mayor George Saxon to present to the camp.
Skegness Grammar School student Ellery leaves on July 6 for the expedition.
Challenges he will face include trekking, mountain climbing, mountain cycling and kayaking.