The Hollow Run Trail at Schenley Park, Pittsburgh, PA, is an easy 1.1 mile one-way hike that brings you point-to-point from both sides of the park.
The trail runs through the lowest point where you hike along Hollow Run. Hollow Run has some small stone bridges that you'll hike over and eventually leads to Panther Hollow Lake.
When hiking closer to Barlett st, parts of the trail become skinnier and harder to hike on, so watch your footing.
Not an out-and-back trail since you have various options to get back to the start, but expect to hike over 1.5 miles out and back.