The Purple Blaze Trail at North Park in McCandless, Pennsylvania is an easy 2.4 mile out-and-back hike in the central-to-southern section of the park. This has two trailheads - one on Old Ingomar Rd and one on East Ingomar Rd - this GPS data brings you from Old Ingormar Rd west to East Ingormar and back; however, you can hike this whichever way you want.
The trail itself is mainly flat with a few ascents and descents along the way, but nothing difficult. In autumn, this is a great trail to see what Pennsylvania's foliage has to offer since you can often see the colorful surrounding hills through the breaks in the trees.
One unique part of this trail is that at the trailhead off of Old Ingomar Rd, there's an old fireplace and chimney sitting on what looks like an old foundation.
Note: at the end of this trail on the western side is a the Purple & Black Dot Trail - this trail appears to be closed and it looks like the park has started to strip the blazes off some of the trees. So you cannot make a loop of the Purple + Purple/Black Dot Trails anymore.