An open space park/mountain on the edge of Golden, CO.   A very popular and well defined  loop trail for mountain bikers and runners.   I think it should be on the list!  

There is a Strava segment for the CCW loop starting at the Mesa Spur Trail.  There may be other segments for this loop, starting other places or running CW.  You must beat the Strava times to claim the FKT!

(Editor Note: this is a link of the 3 loops in the Weaverville Basin Trail System that all use Bally Road as the trailhead).