April 15, 2016
4/14/2016 I rode a little over six hours for 45 miles on my fatbike. I had planned a single loop but had difficulty finding the trail and so I got lost for a few hours. I used strava, a garmin gps, maps off the internet, and photos of the maps at the trailhead and I still had difficulty finding the trail.
Parts of the trail were washed away with lots of loose rocks and parts of the trail were the creeks flowing down the hills even though it supposedly hadn't rained in a few days. There was a lot of doubletrack and ruts from motorized vehicles. Trail damage from horses was mostly where the trail was wet with trash and beer cans along the sides of the trail and in the streams.
It wasn't worth the drive, I'm twenty miles from Chubb trail and I would rather do loops.
April 21, 2016
It doesn't sound like you were on the Berryman at least not all the time. For example, there is no double track on the Berryman, and it is not wide enough for vehicles to drive on it. Interesting.