North Kaibab Trail
29.5 mi 6,870 ft gain
The North Kaibab is the North Rim's corridor trail and the least-visited, most demanding of the Grand Canyon's inner-canyon routes, descending steep switchbacks through narrow side canyons to the Colorado River with water stations at Cottonwood and Manzanita. Most hikers tackle the full 29.5-mile out-and-back as a multi-day backpacking trip; Supai Tunnel and Roaring Springs are common day-hike turnarounds from the rim. The NPS strongly warns against hiking from the rim to the river and back in a single day because of extreme inner-canyon heat and a 6,000-plus-foot climb out, and search-and-rescue calls are routine. Any overnight camping requires a backcountry permit, and the North Rim is seasonal, generally open mid-May through mid-October.