A TOUGH test lies ahead this weekend, as youngsters from across the country gear up to face one of the biggest challenges of their lives. The 47th annual Ten Tors Challenge takes place across Dartmoor, with teams flocking from across the country to take part, praying for good weather. This year's challenge kicks off from Okehampton Army Camp on Dartmoor early on Saturday morning. General Sir David Richards, Commander-in-Chief Land Command, will flag away 2,400 participants in 400 teams as they embark on a trek across the rough and wild terrain of Dartmoor. The teams will be completing 35, 45 or 55 mile treks with a compulsory overnight stop. The event becomes a test of self-will and determination in the face of unpredictable elements and terrain. Brigadier Jolyon Joyce, Ten Tors Director and Commander of the Army's 43 (Wessex) Brigade, said: 'This year, I will be emphasising the need for teamwork and determination to overcome the demanding challenge, as well as encouraging participants to experience and respect Dartmoor. 'This is a weekend they will remember for the rest of their lives. Those taking part have accepted a demanding challenge. They will pit themselves against the rough terrain of Dartmoor, against the weather and experience physical and mental pressure. 'Good teamwork is essential — that physical and mental bonding of individuals all seeking to achieve the same goal. Some will lead and some will follow but everyone is participating with the goal of completing the course with the same people they set out with.' In the build up to the weekend, all teams have undertaken vigorous preparatory tasks with team managers attending a special weekend course, focussing on Dartmoor's climate and equipment requirements. All entrants must be self-supporting and carry food, water, bedding, tents and rubbish bags. Paramount to the success of the weekend is understanding the sensitivity of the moor. Ten Tors organisers and Dartmoor National Park Authority have formed a close relationship to help enhance the understanding and enjoyment of the participants while trying to minimise its impact on the moor. The DNPA said: 'Closer work with the organisers has led to better understanding between different organisations involved which will stand us in good stead as the event adapts to changing circumstances.'