Can be snowbound until July.
The trail can be ridden in either direction, but it is preferable to go down since there are some steep sections on open faces. The trail starts near Boulder Lake and you'll have a climb up to Buckhorn peak ridgeline before you come to the descent. You'll negotiate some switchbacks in the trees as you get to the high point. Once at the high point the descent starts out steep and is on an open face that is loose and rocky so be careful since the trail is a long ways from help. Once you hit the trees you'll leave the loose rocks behind and the trail becomes smoother and faster. Now you'll have a nice long singletrack descent in the trees and there is only one more loose section with the trail becoming very mellow for the last half of the ride. There are a number of loop options around to consider that can be put together using some roads.
There is also a hot spring around 7 miles down the trail. There is a faint trail that leads down to the river to access the springs. Conditions vary, so it is worth researching further if you want to make a hot springs stop.