There is almost 35 miles of awesome singletrack to be ridden. There is a trail for everyone, wheter you want a relaxing after work ride or a technical monster, it's all here. Some of the trails are quite rocky at some points, but it is all rideable. Bootleg Canyon has been dubbed an Epic ride by the I.M.B.A. Visit BootlegCanyon.org or one of the bike shops in town for a map. There is also some killer downhill trails for those gravity extremists.
From Las Vegas, head south on the 93/95 about 15 miles until you come into Boulder City. Make a left on Yucca Street (just after the Taco Bell) and take Yucca to the detour to the trail head, once on Yucca you pretty much just follow the signs for Bootleg Canyon.
http://www.singletracks.com/item.php?c=1&i=1648