Follow the orange blazes. This area has many trails and even more (and confusing) connectors so looking at the posted maps or using the Trail Run Project mobile app
From the Potomac Heritage Trail, you'll cut to the left and go up a VERY steep incline. After that initial climb, the trail will level out and you can continue northeast, merging for a short segment with the Burling Cabin Trail
before coming to an end near the water.