Thompson Trail #629 is a 4.8 mile lightly trafficked out and back trail located in the state of AZ that features a river and is good for all skill levels. The trail is primarily used for hiking and is accessible from April until September. 4.8 miles 291 feet Out & Back hiking forest river Expand Map Sign up now to see this map! Reviews (0)Photos (0)Recordings (0)No one has reviewed this trail yet. Be the first!