Kingdom Trails in northern Vermont is probably the top of my list. It has lots of variety, beautiful landscapes everywhere you look, and that wonderful rural New England vibe.
The eastern half of Oregon also has some spots that I absolutely adore, and which are often overlooked. My riding buddy and I regularly have the trails to ourselves. They aren't as big and grand and well-maintained as trails in the Cascades, but the sagebrush steppe and the smaller, less populated mountains out there have their own charm.
