Taking place in Wales, specifically Sennybridge and the Brecon Beacons, selection lasts for five weeks and normally starts with approximately 200 potential candidates. Candidates complete a Personal Fitness Test (PFT) upon arrival, which consists of at least 50 sit-ups in two minutes, 60 press-ups in two minutes, and a run in 10 minutes and 30 seconds. They then complete an Annual Fitness Test (AFT), which consists of marching in two hours while carrying of equipment. Candidates then march cross-country against the clock, increasing the distance covered each day; this culminates in an endurance test known as the Endurance, in which candidates march with full equipment before climbing up and down the mountain Pen y Fan (886 m; 2,907 ft) in 20 hours. By the end of this phase, candidates must then be able to run in 30 minutes or less and swim in 90 minutes or less.