The Yellow Loop Trail at Hartwood Acres Park, PA, is a very short 0.9 mile loop hike along the western portion of the park.
Parking for the Hartwood Acre tails is unfortunately to the far west side of the park marked by the address on the map.
This GPS data brings you along the western portion of this loop before crossing the stream to head north on the eastern section. When heading down the western section of the loop first, make sure to take your immediate left-hand turn onto the trail where there's a large downed tree with a large pile of soil. If you do not take a left, you will not follow the yellow blazes and the blazes are not marked well on that side of the trail.
Dogs and biking are allowed here.