A challenge course (10) comprising a frame (20) having a substantially horizontally oriented track (120), a vertically oriented column (60) fixed to and extending downwardly from said substantially horizontally oriented track beam (30), said vertically oriented column (60) terminating in a bottom portion that is fixed to a substantially oriented foundation (40). The track (120) has a channel (150) therein in which a moveable member (360) slides. The track (120) has interchanges whereby the moveable member (360) can be moved in one of different directions. Descending downwardly from said moveable member (360) is a safety cable (350). The safety cable (350) extending downwardly to a safety harness (600). A further embodiment includes the challenge course (10) that can be deployed and re-deployed by hauling with a motor-vehicle. Further, a participant can be secured to the track (120) while still on the ground before ascending to the activity height.