Derek and I mountain biked at McCullough Hills in Henderson, NV on a beautiful 80 degree morning. I did some online research and Trailforks says there are 50 trails for a total 66 miles. I rode 15.8 miles with 1705′ of climbing.
Trails out here are dry desert with lots of rocks. The highpoint was a few feet under 4000′ so not the flat desert you think of the Vegas area as being. Nothing was incredibly technical though if that’s your thing, you could hit up the trail Break It Till You Make It. Our ride was just good old fashioned cross country with good climbs, some switchbacks, and really flat out fast sections. If you’re in the area it is worth checking out.