One of Zion National Park's most famous walks, the Riverside Walk, accesses the famous narrows north of Zion Canyon. The hike is 1.8 miles and you'll trek over a walkway that borders the Virgin River. The best part of this hike is that if you're hiking on a hot day, you can leave the trail to take a refreshing swim at any river access point! You'll see many sites on your riverside walk, including the 3,000-foot rock walls which form an amphitheater at Zion Canyon's northern end, a pool along the trail, and the maidenhair ferns hanging from the rock face. Beyond the Riverside Walk, if you want to continue further, you'll face obstacles such as chest-deep water and a canyon just 100 feet wide! Further upstream, the canyon walls become even more narrow and shrink to only 20 feet! Trekking deeper into the narrows can become a potentially dangerous adventure. Be aware of flash flooding which can pop up at any time. Explore as much of the narrows as you desire. When finished exploring, return to the lovely scenery and easy trail of the Riverside Walk. A permit is not required to hike Riverside Walk, but to backpack through the narrows, you must obtain a wilderness permit. Trailhead Directions: Access to Zion Canyon from May and October is restricted only to shuttle traffic. Board the shuttle at the Zion National Park Visitor Center. The shuttle will be taken to the final stop, the Temple of Sinawava, at the northernmost end of Zion Canyon.