Skyliner provides easy access to the higher elevation or west end of Phil's trail system. It's a beautiful, forested flowing trail. Start at the Skyliner's trailhead off of Skyliner Rd and head directly up. You'll then take a left after ~100ft and head toward Bend.
While you would think this would flow downhill, it actually doesn't. It is an up and down trail, with a few logs and one rocky technical section thrown in to keep you awake. Keep pedaling, it's gorgeous, and after a few miles you'll have the option to explore a variety of additional trails.