Bad weather can obscure the trail. Carry a map and compass and know how to use them. Retrace your steps if unsure of your route. Make clear plans and make sure the group understands them. Keep your party together.
Lost persons are typically a result of groups splitting up.
Leave a detailed travel plan with a friend or sign out a safety registration at a Park Information Centre. Be prepared to survive at least one night out a search takes time. Terrain Slips and fall are the main sources of injury in the backcountry. Wear boots with good soles and ankle support. Take your time and watch your step.