1. Take plenty of water for yourself, and pets. Twenty ounces an hour on a warm day is a good rule of thumb.
2. Bring food to fuel your hike. Granola and energy bars make a nice choice.
3. Be familiar with the area before you go. Satellite imaging sites like Earth Google and Yahoo Maps allow you to preview your route. Take a compass, maps and/or GPS unit when you go.
4. Tell someone where you are going and your expected return time.
5. Travel with a buddy. If you become lost or injured, a second person will help.
6. Take extra clothing for unexpected cold temperatures or rain.
7. Bring a cellphone, or satellite messenger for summoning help.
8. Bring a flashlight if you expect to be out on the trail late in the day.
9. Wear sunscreen and lip balm in the mountains. The ultraviolet light is much stronger at altitude.
10. If you get lost, stay put and attempt to call 911. Let rescuers find you.