Huge variety of trail terrain. Great for all types of runner. Awesome views of Zion National Park. Free camping and parking.
Windmill trail and trailhead sits just down the road from Gooseberry Mesa Trailhead in Apple Valley, Utah. Head out on this figure-8 loop for as long as you want. If you're smart, you'll bring your MTB, and you can ride the singletrack once you're done getting your run in.
This is also a great spot to set up camp and get great starlit skies.