The Orange Blaze Loop Trail at Boyce Park in Monroeville, Pennsylvania is an easy 1.2 mile loop hike that brings you through the southern end of the park. The loop starts at the southwest corner of the parking lot - follow the trail towards the edge of the park and follow the fence line.
About half way through the trail is a waterfall, about 7 to 8 feet tall, but you can't access it very easily. To get to it, you'll have to hike down a small hill off the trail - you can see this tiny section in the GPS data provided along with the picture marker for the falls.
The trail ends at the entrance to Boyce Park along Old Frankstown Rd, so you'll need to hike an additional 0.3 miles to get back to parking for a total of 1.5 miles.