August 22, 2016
This trail hasn't been reviewed in a while, and some things have changed. First, the road from 40 isn't bad - 18 miles of gravel/dirt from 40 to the trailhead. The trail is brutal. Starts nice, but gets loose and steep. The climb up to treeline is very tough. Few ride the trail, and don't expect to see anyone. As a result, this is a backcountry trail. Some stream crossings and downed trees. Once you hit treeline, the trail goes away, look to the right to find it. The CDT intersection is marked with a post. I kept going along Arapaho Ridge above treeline eventually to a large rock cairn, which marks the descent to Grassy Run trailhead. At this cairn, the trails disappears and I could not find it - I saw a trail sign lower, but rode down and still no trail. This trail will take much longer than most trails you ride, and here I chose to turn around and head back. The singletrack above treeline was tough, exposed, and loose. Flipside is....pretty cool riding your mountain bike above treeline. The descent was fun. I'll be back at some point. I had intended to do a long loop coming back via CDT, but like I said - this trails take a good deal of time. I rode about a half mile of CDT also - similar riding. All in my day was 19 miles and 3500 climbing. Enjoy!