Let's do Butterknife! We'll meet at the Third Flats trailhead.
This is an intermediate ride, relatively strenuous. I think it's 11-12 miles. There's a fairly long climb out at the end.
A good description of the route is at http://www.trailfu.com/mountain-bike/colorado/grand-junction/twist-and-shout-butterknife/Default.aspx
A google map of this is at http://www.gmap-pedometer.com/?r=5194716
Directions to the trailhead: Take Broadway to Monument Road. The left to D Road comes up quickly. That turns into Rosevale, which eventually becomes Little Park Road. Continue on climbing and note that the trailhead for the Third Flats trails is approximately 1.2 miles beyond the well-marked "Little Park Trailhead."
Third Flats trailhead is on the left, but there are many signs indicating NO PARKING. We will park at the large totally unmarked dirt lot on the RIGHT about 75 yards BEFORE the Third Flats trailhead, this is where hikers and mountain-bikers park usually park their vehicles.