I visited Bent Creek for the first time on my first mountain biking trip with friends and I was impressed. It has an array of difficulties and the paths are great. The scenery, of course, is as good as it gets. It's perfect for all people of all ages and experience. Parking and admission is free (the NC Arboretum is encompassed by the experimental forest, and it does have fees). Any length of visit is appropriate here though I do recommend spending at least a few hours- there are miles of beautiful trails here! I am definitely giving this forest a full 5 stars!