About this permit
Rim-to-rim is one Grand Canyon backcountry permit covering a crossing of the canyon on the corridor trails. North to south it is 23.5 miles: 14 miles down the North Kaibab from 8,241 feet to Bright Angel Campground at 2,480 feet, then 9.5 miles up the Bright Angel Trail to 6,860 feet on the South Rim. Most people take three days and two nights, camping at Cottonwood and then at Bright Angel.
Grand Canyon moved backcountry reservations to Recreation.gov in January 2024, and space on that calendar keeps opening after the draw: leftover space for the remaining applicants from around the 20th, the general public from the 1st of the following month, and cancelled space within 24 hours of each cancellation. A cancellation alert catches all of it. The draw itself is a monthly early access lottery: applications run for two weeks and close at 5 pm MST on the 1st of the month, four months before your start month, and the top 750 applicants get an assigned date and time to log back in and build an itinerary.
One thing to plan around: the park has said rim-to-rim hiking will not be possible from 11:59 pm on October 15, 2026 through about February 2027, while a section of the North Kaibab between Redwall Bridge and Cottonwood Campground is closed for waterline work.
The route
Standard direction is north to south. From the North Kaibab Trailhead at 8,241 feet the trail reaches Supai Tunnel at 1.7 miles (6,800 ft), Roaring Springs at 4.7 miles (5,220 ft), Manzanita Rest Area at 5.4 miles (4,600 ft), and Cottonwood Campground at 6.8 miles (4,080 ft), the usual first night.
Day two runs Cottonwood to the river. Ribbon Falls is a short detour at 8.4 miles. Below it the trail enters The Box and stays there until Phantom Ranch at 13.6 miles. Bright Angel Campground is at 14 miles and 2,480 feet, half a mile north of the Colorado and right along Bright Angel Creek.
The climb out on the Bright Angel Trail is 9.5 miles. River Resthouse comes at 1.5 miles from camp, Havasupai Gardens at 5 miles (3,800 ft), Three-Mile Resthouse at 6.4 miles (4,748 ft), Mile-and-a-Half Resthouse at 7.9 miles (5,729 ft), and the Bright Angel Trailhead at 6,860 feet. Exiting on the South Kaibab instead makes the climb 7 miles from Bright Angel Campground with no water and no shade. Most people take Bright Angel.
Why it matters
The North Kaibab, South Kaibab and Bright Angel trails meet at the only two footbridges over the Colorado River in the whole Grand Canyon backcountry. The park calls that junction the Trans-Canyon Corridor, and it is literally the way across. There is no other place to get from one rim to the other on foot. Every rim-to-rim itinerary funnels through it, which is why Bright Angel Campground is, in the park's own words, by far the most requested below-rim backpacking destination.
The feeling
You leave the North Rim in ponderosa shade at 8,241 feet and walk downhill for most of a day. Roaring Springs comes out of the cliff face sideways. Below Cottonwood the walls close in and the trail enters The Box, where the rock holds the day's heat long after the sun has gone. Then the bridge, the river noise, and camp under cottonwoods at 2,480 feet. The next morning you start climbing, and you keep climbing for 9.5 miles, and the rim you can see from Havasupai Gardens takes another three hours to reach.