These trails begin on the North or South Rim and eventually make their way to the rock bottom of the Canyon a vertical mile below. The trails vary in length and difficulty . A backcountry permit is required for all overnight camping in the park. Find out more about securing a permit by following this link http://www.nps.gov/grca/backcountry/permit_procedures.htm

Day hikers are not required to obtain a permit from the park service.  They should choose their route carefully, and let someone know where they are going and when they plan on returning. Each year several day hikers become lost or disoriented in the Canyon, and several perish as a result. Don't become a statistic. Do your homework, don't take any undue risks, and stay well within your known limits in terms of physical exertion.

Camping in the Backcountry
All overnight camping below the rim requires a permit from the Backcountry Office. This is true for undeveloped areas on the rim as well (camping in developed areas is restricted to existing campgrounds). Permits are required and must be made in person or by mail or fax. Telephone and email requests are NOT accepted.

Applying well in advance (up to, but no more than, 4 months) is recommended although a small number of permits are sometimes available for the same day. There is a fee of $20 per permit plus an additional fee of $4 per night per person. Address requests for Backcountry permit information (which includes permit application form) to: