You have the option to hike the whole 15 miles of canyon, but you can also hike in a few miles and turn back while still getting the experience of exploring Buckskin Gulch, the longest slot canyon in the world. Be super aware and careful of flash floods, check in on weather before going. You'll need a $5 self issue permit required at trailhead.
Buckskin Gulch is a natural wonder. At 15 miles long for the canyon it is the longest slot canyon in the world. It sometimes is as narrow as 2ft. Because of the nature of this canyon and Utah topography this canyon is subject to deadly flash flood if it rains anywhere along the headwaters. Be sure to check in with local Rangers about current flash flood predictions.
Starting at the Wire Pass Trailhead gives you a shorter, more scenic start to Buckskin Gulch. Once you are in the canyon there is only two ways to go, farther in, or out.
We hiked in a ways before turning around without needing to wade through any water deeper than 8 inches. You can backpack the whole length of the canyon if you have appropriate gear and experience. If you choose to go farther will likely have to wade, or swim through deep, sometimes putrid water.
This is a real adventure, not easy, and not always safe. However, the peaceful serenity of the silent canyon with its majestically sweeping sandstone walls, painted in hues of yellow, orange, red and pink will soon seduce you into staying a while in this otherwise inhospitable place.
For a 22-mile, full canyon adventure, you can do Buckskin Gulch: Wire Pass to White House Trailhead.
NOTE: When in doubt, stay out of the canyon.