Check in with someone before you leave.Leave a detailed itinerary with someone who is not going on the trip, including your route, inventory, areas you plan to stay. It's important that someone knows when you expect to return, so they can check in if you're late. Be sure to contact them after you have safely returned.
Pace yourselves.An average hiking pace is 2-3 miles per hour. Don't get overambitious. Shoot for less, rather than more, so you can take time to enjoy the sights. Determine the approximate area where you will camp each night ahead of time. Try to plan your trip so that you camp close to a reliable water source each night.
Don't keep food in your tent.All of your food needs to be secured from bears, and kept separate from your tent, if you're going to be hiking in the backcountry. Even if bears aren't regularly found in the area you're hiking, it's important to protect yourself from all sorts of curious animals, who might want to sneak a bite.