Backpacking and hiking are essentially a unidirectional activity – may be complicated with the added weight of a backpack, the gait changes due to different terrain and the stress of lateral motion from the uneven terrain. Common foot problems from improper fitting footwear are blisters and toenail damage.
Many variations in the style and types of footwear available. Shoes need to be extra supportive, due to the heavy weights that are carried by backpackers. Breaking in of new shoes/boots before trips is extremely important to prevent problems – best done by wearing around the home initially, then shorter walks, then longer walks.
The lacing system should be able to hold the foot back in the shoe and prevent the foot sliding forward in the shoe during downhill walking prevents nail damage.