In my search for trail runs near my home on the eastern side of Denver I looked at county open space parks. Douglas County has several parks in their system, one of which is Hidden Mesa. Its a trail runner's hidden gem located just a half mile north of Franktown on Parker Road (Rte 83).
It isn't a pristine area nor a shady one since it is old ranch land and scrub brush hills. Unless you like to broil in the sun any use during the heat of summer guarantees a lot of sun exposure.
What it provides is a nice dirt and rock trail that allows a 6.9 mile loop run which can be extended by repeating the 1.9 mile loop that circles the mesa top.
You will share this trail with other bipeds on foot, bike or horse. Please slow down and yield to any riders on a horse as the animals might spook from you running towards them. See you on the trail.
Get out and Explore the World!