This is an OHV area and the trails can be rutted, eroded, and there can be quite a lot of traffic; not always awesome for running.
Tibble Fork #41 is a lot of fun if you like challenging downhills.
From the intersection of South Fork of Little Deer Creek Trail #252
and Ridge Trail #157
, the trail begins with great views of the surrounding mountains. From there, the route is a steady descent through a mix of forest and open meadows. About midway through, the trail crosses the Mud Springs #173
Tibble Fork ends with a series of switchbacks, bringing you to its namesake reservoir.