I did this loop both clockwise and counter clockwise, and if I had to make a choice, I would suggest that you ride it clockwise.
The trail starts of very easy, but after about 10 min. there is a pretty demanding climb, not so much steep, but the baby heads and roots make it a pretty grunt.
Anyone lacking a good healthy set of lungs and stamina, will probably end up walking about 20-30% of this section.
Once at the top, there are a few excellent narrow and very fast down runs, just be very careful, 'cos visibility is next to nothing on parts of the loop, and it is shared with walkers. Daniel Ridge Loop is very scenic, and best done very early, or pretty late to avoid crowds.
It took me an easy 70 minutes to do the loop.