This is fun and twisty, up and down, groomed hardpack trail that features a little rockgarden action, but nothing major. During the summer and fall it can get pretty dusty and loamy with pine needles. Great tree canopy that makes this an ideal summer trail. You can park at either trailhead (Overlook or Skillman) and ride it either way. Hallelujah Trail is commonly looped with Pioneer Trail
YBONC has a three stage race that uses this trail, they put on a great race. Be on the look out for RED signs that keep you on Hallelujah Trail. The loop with pioneer can be ridden either way. However, the direction depicted is the most fun.
There are oodles of options on Burlington Ridge, and I highly recommend exploring the area. I love using this segment when doing a shuttle run down pioneer, it adds some diversity to the route.