Walker's Trail — Gary M. Roberts

Alone and lost in the mountains with his six-year-old sister, fifteen-year-old Zach Walker is faced with the task of keeping them alive while finding help for their parents who have been kidnapped. To make matters worse, Zach is being followed by a man set on killing him and another whose intentions are unknown. Walker's Trail is a story of survival, love, and a boy becoming a man in the 1870s.