Bizaare question. Why does it matter? All of the castlewood trails are short so just mix them up and interconnect them to create your own loops. I probably do a different collection of them each time I go out there. For the Spring training races we were doing Lone Wolf to Love to Grotpeter which was a lot of fun and the only hard part being the initial climb up to Lone Wolf. That loop will only take about 30 minutes.