What you need to know:
Length - the map says 4 but we had it at 6.3.
Water - there should be water at the alkali creek campground. you may be able to get water from the fort meade VA hospital in a pinch.
Water crossings - none.
Camping - alkali creek has a campground. this area is outside of the black hills national forest, so there is no camping other than at the campground.
Trail condition - fairly easy to follow, there was one post towards the end that pointed in the wrong direction, so keep an eye out.
Notes - the first half offers some nice views but the second half just seems to meander around.