Bring all the items listed in the "Things Required" section of this article. Wear comfortable hiking boots with socks, sunscreen, a hat and sunglasses.
Choose a hiking trail on the South Rim, the North Rim or the inner canyon. Some trails are for day hikes and others are for overnight ones. Listings of the trails, the Trail Accessibility Guide, trail advisories, conditions, weather and warnings are available on the National Park Service website.
Start your hike in the early morning (predawn) and finish it in the late afternoon. Take a break, preferably near a shade, between 10 am and 4 pm, the hottest period of the day.
Consume enough drinks and supplements during your summer hike. It is hot and dry in the Grand Canyon and you must not become dehydrated. Drink one gallon of water each day and consume it before you get thirsty.
Do not eat salty snacks during your hike. Know the warning signs of health problems you may encounter, such as light-headedness, dizziness, pain or sudden fatigue.
Reserve any campsites or other lodging that you may need before arriving at the Grand Canyon for your hike. If you will be doing an overnight hike, visit the National Park Service website for information on booking accommodations.
Check the weather before you go. If temperatures seem too hot for you, or if there are thunderstorms in the area, you should avoid the trip.
Map out how to arrive at the Grand Canyon and where to park your car. Summer in the Grand Canyon tends to be crowded and parking may be available at a premium. Have a plan for where you are going in the canyon and how to get there safely and on time. Any road closure information can be found online.