Corridor Trails Distances. South Kaibab Trail: The trail begins on the South Rim near Yaki Point, and descends to the Colorado River. Elevation change from rim to river is 4860 ft (1480 m), along a 6.3 mile (10.1 km) trail. Because of the unavailability of water and steepness of the South Kaibab Trail, rangers recommend hiking down this trail only - and recommend using the Bright Angel Trail for the hike out.