I have been out here a few times and like others mentioned the trail markings are pretty bad. Today we managed to follow the entire blue trail, about 8 miles. Please note we hiked. We did come across only one tree laying over the trail. My hiking partner today (he is also a mountain biker) said the trail was not the best, but bike-able. I figured out where I had gone wrong on my previous attempt to hike the blue trail. I had left the trail and followed some of the red trail to the paint ball area and ended up taking the blue trail back up the mountain and ended up losing the trail after the big uphill next to the intersection of Liberty Hill road and Nolan Road. The trail is designed to be followed from the parking lot at the Obstacle course clockwise. Some of the trail markings are not visible going the other direction. Some nice soul has marked some of the trail with blue spray paint and made staying on the trail a lot easier, because the "official" trail markings are sometimes misleading or flat out wrong (especially where the blue and green trails meet) I plan on going back and tying some flags on the trees soon. Personally I think the searching for the trail at times are part of the fun hiking this trail .... Please note that we had checked in at the entrance to BLORA , had gotten a map -just like the one in parking lot - and used it in conjunction with the GPS on my phone when we were unsure. The reason to check in is that the place is very little travelled and they ask you to at least call to let them know you are off the trail....