This a must visit for anyone going to Las Vegas. I wish I had known about this place earlier cuz I've been to Sin City many times, and would've loved hike the different trails.
Red Rock Canyon is only about 20-30 minutes west of The Strip, and it's a world apart. We went on the Lost Creek Children's Trail, which is an easy loop with surprisingly lots of shaded areas. It also features a waterfall. We went in April, and it was just a little trinkle.
Would definitely come back!