This is a nice "lollipop" ride offering more beginner-friendly terrain than many of the surrounding trails.
From the "Mayo Bridge" on 14th street, look for a paved path on the upstream side of the south end of the bridge. Follow this to a road that also intersects the flood wall. Take a left continuing under the I-95 bridge. As you are under the I-95 bridge, look for a trail to begin on the left. This is the start of the lollipop. Follow this for a ways to a parking lot.
This parking lot has a boat ramp...pass the ramp looking for a kiosk on the left. The stem of the lollipop continues here. Follow the Ancarrow's Landing
Trail across a gravel road. The trail continues to a fork. This fork represents the beginning/ending of the loop. Personally I prefer the loop in the counter-clockwise direction, but it is good in either direction. After considerable rain, there may be small portions that contain deep water (1ft - 2ft) for a short portion.