These trails are great! It's a little crowded, especially on weekends, but still some great trails and a fun ride. As mentioned by others there are 3 trails total. The main loop is about 7 miles and a fun ride.
If your going for the first time definitely watch out for some of the sudden drops and rocks about 3-4miles down the main loop. The last 1/2 of main has some interesting terrain that can sneak up on you as the trail has a lot of switchbacks.